FYI I'm going to unwatch this thread now --- I have no sense that there is anything useful to be gained. If anyone is a moderator and wants to delete the thread, feel free.
Don't take it too hard. Many here agree with you, but it's very difficult for humans to be objective about something like this. There isn't currently any way to return to 7.1, so when there is no 'choice' left to be made, there is tremendous psychological pressure to reinforce your previous decision to update the software.
Until the system is more capable in Tesla or other makers cars, I think they will keep these nag features in place. Even MB and others with rear facing radar and 5 cameras use frequent nags. The system proved unable to keep up with Tesla's aspirations at the time of launch and changes had to be made 7.0->7.1 and now this.