Module development and code questions

On one of my projects (Advanced Help), all the project's permissions come with the following warning:

Warning: Give to trusted roles only; this permission has security implications.

Hi all,

I've been developing custom modules in Drupal 8 for about two years, and I've run into an issue that I'm curious if anyone else has seen before. So I'm making a standard form element with the forms api that uses Ajax. in this case a select element that changes the options of another select. It fires ok, and works fine for most users. The issue I noticed however was that after updating to core 8.9.16 screen reader users have been having the following issue.

Hello everyone,

I've been struggling for days to create a request to an API with SSL certificate so that I can actually use that API (Visa API in question).
If I run same code outside Drupal, it works fine. The problem is when I try to create the same request from my custom module.

Here is the issue that I get : 

Hello,

We are using Webform 8.x-5.27 with Drupal 8.8.6.  I am kind of new although I have learnt a lot in Drupal and we have a site running in Drupal.

Scenario:

We have Drupal which has pages for anonymous users. However the Corporate OIDC based login which I have configured in the basic theme via js, ensures whenever user tries to access Drupal he gets challenged for authentication.

I am trying to add a javascypt code to be executed after ajax call as a Drupal behavior in Drupal 9. The expected outcome is to roll a dice after each ajax call that is refreshing a view.

This is the code

Introduction

I'm trying to create a custom version of the entity reference field and have been working through the code of the base type to figure out how it is working. Originally this was going to be a question specific to how are the content type checkboxes populated in the settings form (edit tab) when adding/editing an entity reference field to an node. Though, in the processes of writing the post, I think I figured that part out.