Hi charity-chance,
All I got was that something is not working anymore. Not OK, I get that.
The Bullet Dynamic System has not changed lately, no change to my knowledge.
The Simulation System is newer and introduced over the past years in increments, creating the base for many new options, developed to allow for a holistic VFX work.
You have made up your mind and are going with Blender, noted. I encourage you to explore this option, so you know if that is a better fit for you, as you are obviously not happy with our offerings. Your posts so far expressing to 50% upset in a way that I have address before, I understand that you need to move.
As a side note, you're always welcome back, never hesitate to ask any question that could level the upset you feel right now. (Not a cooperation rubber-stamp, I surely know how that feels, and I have run in those situations with 3rd party apps in the past 30 years more than often myself.)
My best wishes for your future.