For me it would be a big deal. The depth camera is not only used for FaceID but also for awareness features (lowers volumes of alarms or doesn‘t let the screen dim as long as you‘re looking at your phone). It might also be used for Portrait Mode on the front camera but I‘m actually not too sure about that. The biggest issue with this is that you paid for a working phone but got a defective one. Also trust me when I say that FaceID is amazing and you stop thinking about unlocking your phone because it already is unlocked the second you look at it.

iPhones also have floaters in their eyes

the dynamic island got lost