Holy cow...that's a lot of problems across the board. I'm trying to see a common thread and it isn't clear. Was thinking that the phone type and OS version might be a factor.
Not to be a dissenting opinion, but I have had zero issues with AA and using a wireless connection. Sony phone, Android 12, and current version of Uconnect 5. I spent 20 hours in the truck over the holiday traveling nearly 800 miles in rural and city areas. Using audio, NAV, phone, and text.
So, there is hope. I would suggest pressuring your dealers to fix or replace.