I intuit parent was referring to PC gaming, which is far more demanding than mobile gaming. Also, most PC games are compiled to x86_64, which means there will need to be a virtualization layer for non-native games (the majority), which will add latency.
Just because most gamers game on mobile and consoles do not make them any less of gamers. PC gamers are a minority, not the majority; PC Master Race is a meme and not reality.
If anyone wants to refer to PC gamers, refer as such. "Gamers" with no additional descriptors by definition is anyone who games, and that includes gamers who play on mobile and consoles.