I’ve never had three screen running simultaneously on the same Mac. Ever. And with screens getting bigger and nevertheless more affordable I don’t see that need coming up anytime soon.
So definitely wouldn’t be a problem for me. Not for my wife either which is why she’ll be pickung up a fully decked out M1 Air as soon as Apple’s holiday 6% cash back deal comes around. 
:)
Nevertheless, if you really need more screens on M1 than what Apple specified, it works using DisplayLink adapters. Up to 5 external on the MBs, up to 6 on the mini.
