Dealbreaker if this were me. I’m one of those people that wants everything to work even if I don’t use it, because I paid for it. Now if it were free, or ridiculously cheap, maybe I could let it slide.
Face ID is too useful for me though, I could never have a phone without it, Apple or otherwise.
I just found my old iPhone 4S in a shoe box yesterday. It’s the only old iPhone I’ve kept since my last couple shattered and I traded in for credit on my new phones.