No doubt it depends on your location. Cycle commuters in my locale look like [1] - you might see people with TT bars and shaved legs from time to time, but it's certainly not the norm. And if instead of cycle commuters you look at weekend cyclists on scenic bike paths, or the bikes locked to bike racks at major train stations, the vast majority won't be top-price high performance bikes.
[1] https://www.123rf.com/photo_30847100_london-may-6th-unidenti...