I agree, but I am not the kind of person you need to persuade not to buy spyware.
I am just explaining the kinds of reasoning I've heard first hand coming from "gamers".
I view self-identified "gamers" as a cult at this point. If my goal were to persuade them of anything, I'd probably fail. I'm not in marketing for a reason. But the fact that a bunch of fools believe in something doesn't make it true
If the explanation for why a company needs a rootkit is "they don't want to spend effort on a better solution" that means that solving cheating isn't a priority for them, and if we care about that we shouldn't buy their game. It especially doesn't mean you should accept a rootkit to buy their game