Yup, uh-huh. And don't forget to be prepared for all your computer repair and upgrade work to cost more and take longer, as the repairman is forced to continually halt in the middle of his work to call you up and ask you for the number that just appeared on your iPhone, without which he can't proceed until you get back to him with it. And this doesn't happen once, it happens an indeterminate number of times. I'm not saying that 2FA is a bad thing, just letting you know it ain't cost-free to you.