No one is compiling sales charts on second hand cameras at thrift stores. But I can tell you from personal experience going to parties that more people are taking photos with old digi cams or modern old style digi cams like the kodak charmera than phones.

When gen z does use phones they end up running the images through apps like 1998 cam to make it look like digicam photos or using effects to turn video in to VHS camcorder style video.