Maybe it's just me, but one bummer about this kind of system is that's is A+ top security for a lot of stuff I don't care about. To create some account on a random forum to give feedback about how I got a stuck oil filter off of my '03 Civic, for example. With email+password I can just use a low security password because I'm typing on a phone. With these all-in systems my device isn't recognized so I'll need to type in some code from 2FA and type my long, unique password.
I know they're very popular, but there's so much long-term unintended baggage with using these singe signon systems...even assuming Apple's doesn't have the nefarious parts most others have.
Even setting aside Sign In With Apple, why are you consuming mental space and energy with a reused password and whether they should be throwaways or not in 2020, when all mobile OSes and desktop browsers integrate seamlessly with password managers?
Over here, I just use Face ID and 1Password does the tedious filing-and-remembering part that computers are good at.
I use 1Password on both my phone and desktop for logging in. Saving a new password on the desktop is easy. For the phone it seems rather tedious. Especially when, even on the desktop, many sign up pages have me submit 2 or 3 times because the username is taken, password too complex, or I didn't give them my phone number. I find it way less mental space and energy to reuse a weak password.
1. It’s fast
2. It gives you a pseudonym
3. It doesn’t leak all your other social graph data
4. Doesn’t require a new password
The rest are:
1. Faster than creating an email, but will require redirects, and possibly logging into fb/google
2. May give you a pseudonym but often reveals your real name
3. Are used typically to build profiles of you and create stats on app popularity across demographics
4. Don’t require a new password.