I asked GPT4 to refactor a simple, working python script for my smart lights... and it completely butchered the code and apologized mid-generation.
No amount of pleading or correction would get it to function as it did just a week or two ago.
It is so over.
I've never had this issue until the last couple days.
Which just kinda proves my point that it probably didn't change that much, cause people were saying what you are saying months ago.