Agree, Touch ID is the one thing I still really miss from the SE. Face ID is usually not an issue, but there are always cases that result in more friction than with Touch ID.
Sometimes you don't quite catch it at the right angle (and sometimes it sees you when you're not even looking), and other times you just don't quite have enough fave visible for it to work (for me usually when I'm doomscrolling in bed with my face squished into a pillow, so maybe that's a sign).