The biggest problem is that swipe up depends on orientation of the app and that's not always clear, particularly if playing video. The app might be orientation locked in landscape even though you're viewing it in landscape.
And of course there's Face ID, which I personally hate. I know others like it but the false negative rate is horrendous. Plus they increase "security" by having a really lot limit on failed attempts before you have to enter your passcode anyway. And since attempts can be passive, you can hit the limit pretty often. Touch ID is just better in almost every way.
Plus Face ID is an accessibility nightmare as anyone who is vision impaired can tell you. The distance the device needs to be for Face ID to work is not the distance yo use the device at.
Every Apple device should have the option of Touch ID on the power button just like the iPad Air does. It's also why I own the iPad Air specifically.