Rode our local charity ride today and although I don't know exactly how many riders in total there were but lets say 200ish. Out of that number I saw two vintage steel bikes a blue Lemond and a black Raleigh USA add to that my Schwinn Circuit and the wifes Shogun 500 and there were a grand total of 4 out of the 200. most were carbon fiber and aluminum although there were a few modern steel rides of various configurations. Although I haven't been every year this was a marked decline in C&V from the other years I participated. The Lemond and Raleigh looked to be original whereas as both of our bikes I had restomodded with 11 speed Shimano R7000.
That said I do feel like I live in a cycling desert in the Texas panhandle. The riders I do see around here are few and far between no matter what they ride.