I have indeed had to deal with elitists like that as well. People think I have poor taste in FPS games just because I like CoD. Even though I tell them I have been playing since CoD: finest hour. Which plays differently than the modern CoD games. While the new ones are like a Hollywood muscle man action movie. The old ones play more similarly to Medal of honor, with a tone like saving private Ryan. And, they ignore the fact that I play dozens of praised and underappreciated FPS games in the genre. They just think I'm some Doritos eating, Mountain Dew chugging 600lb obese 12 your old.
But, I personally don’t care about the more “elite” of the FPS community. If the FPS game doesn’t have twitch reflex gameplay, takes place solely in the modern era, or is a literal DOOM or CS: GO clone. It’s instantly garbage to them.