Uninstalling Gutenberg editor broke site

Btw, to try to fix it, enable Gutenberg module again and then first disable the Gutenberg blocks text format and then uninstall the module.

I've now done that. It didn't fix it. Below are a description of what I did with as much details as I am able to provide:

Steps taken

Reenabled gutenberg with drush. Success.

Site is now operational again.

Drupal version: 8.9.13
Gutenberg version: 8.x-2.x-dev (latest)

State of the Gutenberg ecosystem:

• Articles list block - Disabled
• Example Block - Disabled
• Gutenberg Cards Block - Disabled
• Gutenberg Cloud - Disabled
• Gutenberg Editor - Enabled
• EditorsKit - Disabled

When I unistalled last time, the checkbox under "Unistall" was initially grayed out, and there was a message: "The following reason prevents Gutenberg Editor from being uninstalled: Provides a filter plugin that is in use in the following filter formats:" followed by a list of text formats (such as "Restricted HTML") to remove it from. I then visited each and every one of them and unchecked the "Gutenberg" text filter. The checkbox under "Unistall" then became active, I checked it, and finally clicked "Uninstall".

This time, the checkbox under "Unistall" is also grayed out, and it now gives the reason: "Provides a filter plugin that is in use in the following filter formats: Gutenberg Blocks text format". I may have overlooked that text format on the list output (reasons) the last time around, but I am pretty sure I didn't.

Anyway I visit the page of the "Gutenberg Blocks text format", unchecks the "Gutenberg" text filter, examine under "Uninstall" and notice that the checkbox under uninstall is now active.

But I also noticed that the "Gutenberg Blocks text format" has its editor set to "Gutenberg", so I return, and replaces it with "None".

I then go ahead to the "Unistall" tab and check the the "Gutenberg editor", and the click "Uninstall" at the bottom of the screen.

The next page says:

The following modules will be completely uninstalled from your site, and all data from these modules will be lost!
- Gutenberg Editor

There is also two panels:
- Configuration updates
- Configuration deletions

The "Configuration updates" panel contains:

The listed configuration will be updated.
Text format
- Basic HTML
- Filtered HTML
- Full HTML
- Raw HTML5
- Restricted HTML
- Wysiwyg

This is every text format that has had the "Gutenberg" text filter installed, with the exception of "Gutenberg Blocks text format"

The "Configuration updates" panel contains:

The listed configuration will be deleted.
Action
    Delete reusable block
Custom block type
    Reusable block
Entity form display
    block_content.reusable_block.default
Entity view display
    block_content.reusable_block.default
    block_content.reusable_block.reusable_block
Field
    Body
Text format
    Gutenberg Blocks text format
View mode
    Reusable block
View
    Reusable Blocks

I then press "Uninstall".

This results in

Drupal\Component\Plugin\Exception\PluginNotFoundException: The "gutenberg" plugin does not exist. Valid plugin IDs for Drupal\filter\FilterPluginManager are: editor_file_reference, filter_caption, filter_html_escape, filter_null, filter_html_image_secure, filter_align, filter_html, filter_url, filter_autop, filter_htmlcorrector, filter_mailchimp_campaign, media_embed in Drupal\Core\Plugin\DefaultPluginManager->doGetDefinition() (line 53 of core/lib/Drupal/Component/Plugin/Discovery/DiscoveryTrait.php).

Drupal\Core\Plugin\DefaultPluginManager->getDefinition() (Line: 70)
Drupal\filter\FilterPluginCollection->initializePlugin() (Line: 80)
Drupal\Component\Plugin\LazyPluginCollection->get() (Line: 26)
Drupal\filter\FilterPluginCollection->get() (Line: 92)
Drupal\filter\FilterPluginCollection->sortHelper()
uasort() (Line: 90)
Drupal\Core\Plugin\DefaultLazyPluginCollection->sort() (Line: 84)
Drupal\filter\FilterPluginCollection->sort() (Line: 144)
Drupal\filter\Entity\FilterFormat->filters() (Line: 58)
Drupal\filter\FilterUninstallValidator->validate() (Line: 592)
Drupal\Core\Extension\ModuleInstaller->validateUninstall() (Line: 99)
Drupal\Core\ProxyClass\Extension\ModuleInstaller->validateUninstall() (Line: 132)
Drupal\system\Form\ModulesUninstallForm->buildForm()
call_user_func_array() (Line: 532)
Drupal\Core\Form\FormBuilder->retrieveForm() (Line: 278)
Drupal\Core\Form\FormBuilder->buildForm() (Line: 91)
Drupal\Core\Controller\FormController->getContentResult()
call_user_func_array() (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 573)
Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 124)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext() (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 151)
Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 68)
Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 57)
Drupal\Core\StackMiddleware\Session->handle() (Line: 47)
Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache->pass() (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 47)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 52)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 23)
Stack\StackedHttpKernel->handle() (Line: 708)
Drupal\Core\DrupalKernel->handle() (Line: 19)

When I return to the front page, I get a WSOD with the same error, and an even longer call stack dump.