Why is jQuery Update now shipping with jquery UI?

I had been using the jquery_ui module to load jquery_ui. I was using the Tabs module with also includes jquery ui plus the tabs widget. The duplication feels bad to me and now I have a third module installing jQuery UI

jquery_ui supports the Libraries API which is nice. That's the solution to this problem.

Why was jquery_ui added to this module without the Libraries API?

Forcing a jquery ui version on me has me pretty much locked out of updating this module as far as I can figure.