Eric F 

Utter nonsense.

I've ridden and raced on bikes made of steel, aluminum, titanium, and carbon fiber. I still own bikes made of 3 of those materials. I'm a lot of years removed from my best racing days and peak fitness, but I haven't lost the ability to recognize and appreciate the differences in ride quality and handling characteristics between different bikes. It turns out that the bikes I prefer to ride are all CF. They're also the bikes that excite me most to look at. If a high-end CF bike helps pro racers get the most from their abilities, why can't I also ride a bike that helps me get the most from my abilities? I'm not racing the way I used to, but I still like riding to the limits of what my body is capable of on a regular basis. That's just playing the game of bikes the way I like to play it. For the same reasons, I wear "roadie" clothing when I ride, regardless of whether it's road, gravel, or MTB. It's clothing optimized for cycling, and helps me perform at my best, regardless of how I compare to anyone else. I'm not pretending to be someone. I am a cyclist, and I use the gear that suits the way I like to ride, based on preferences developed over a long time. At this point, I don't ever expect to purchase a non-CF bike.

All that said. These are my preferences. If yours are different, that's fine. I'm not telling anyone else how they should enjoy the sport/activity, and what they should be limited to using.