Enough with the stupid pop ups about profiles

[VideoAcct19]

I don't need to have to dismiss a popup encouraging profiles every darn time I open the browser. Its a personal computer. If I dismiss it once it should GO AWAY

[Nordenian]

I agree, but....
I use the same email address for everything - I'm retired, so don't have or need a 'work' email, and I use my PC for everything so don't need to syncronise stuff either.
However, I do have different hobbies that it would be good to keep separate, so I tried to set up a profile for each. No go. It seems I can't associate my email / FF account with more than one profile on the same PC.
So please can I switch off the annoying popups!