I do not miss the fingerprint scanner. I was concerned that I might, but facial recognition so far has worked flawlessly, whether I’m wearing my glasses or not.
My wife, on the other hand, most recently preferred the newer SE, because being in the medical field she’s frequently wearing a face mask of some sort, which pretty much renders facial recognition useless. She had a 7S+, but got tired of the size, so opted for the SE as its replacement. Funny thing is, she keeps hers in an Otter Defender case, where she can’t use the fingerprint scanner anyway, so she’d probably have done just as well with the 12 mini.