2FA is cool for things that are important, like my bank account, or probably my AWS account. We don't need it for everything and it's pretty annoying when rinky dink little websites force it on us.
It says in the article that this won't apply to org member accounts yet, but I wonder how it'll work eventually. Member accounts created via account factory don't even have a password, so you have to go through email account recovery to set one and then set up MFA. If this only applies to root users with passwords, that's fine, otherwise I hope account factory will get a way to set up PW/MFA on a generated root user.