yes hand the amount of times Firefox has done so in the last few years is also just a handful (like less then 1 time per year in average)

And some of this notifications where really reasonable to have like the containers. (Except the color thingy, that was some nonsense.)

The only exception is if you somehow end up in a situation where the browser (profile) is for whatever reason frequently fully reset, in which case you might have seen the same notification multiple times.