And they don't even need it all the time either. I did once participate in a CS:S tournament, so I guess I was "competitive", but half the time I was on gun game or ice world or surf maps. My friends and I played normal Warcraft 3 against each other, but otherwise I pretty much only played custom maps, which were apparently popular enough to spawn an entire new genre. I never ran into problems queueing for something like preschool wars or wintermaul. When we did queue for ladder sometimes it was like 10 minutes to find a match.
To your earlier point about e.g. Valorant: my mom invited me to play on weekends with her and my sister. I know my mom is 0% competitive. This was not some serious thing. I couldn't play with them because I'm not going to buy another computer just to run it. That's the absurdity here.