Well it wouldn't be 2fa if you don't use a password. Then it's just 1fa.

(in case you didn't know, 2fa stands for two-factor authentication, as in secondary authentication (usually besides a password))

Damn do I hate websites that do this. It's always a gamble if Keepass can handle their stupid multi-page form correctly.

Even worse: instead of your email or phone number. It's not even username. It's your fucking account number. I'm looking at you airline and hotel rewards programs. You think I know my fucking account number? Now I need to go into my email and lookup my fucking Airline Advantage number? And Gmail search is complete shit and all of the results I get are from the airline in my spam folder so I have to dig through all of that. Then when I finally do find it, fuck me if I can remember my password because I travel like once every couple of years and I'm hoping that if I keep saving up all of my points then maybe I can get a free flight to a neighboring city in 20 years....

My favourite is when they expire passwords so frequently that literally every time I sign in it forces me to do a password recovery