If you are like me and are kinda anti AI AND dislike horrible UI design and want to get rid of the big ass colorful “AI ASSISTANT!!!!!” button in Adobe Acrobat I found this on the forums that works.
On Macs, go to the View menu and select Disable New Acrobat. (I'm not on Mac, so I cannot test).
On Windows, to the hamburger menu in the upper left corner (where the old File menu used to be) and select Disable New Acrobat, it's about 2/3 down the menu (this worked for me).