Something that is "frivolous" to you is a passion or even a profession for others. Competitive gaming is a massive market worldwide, and it wouldn't exist without the ability to enforce a level playing field. Not everything has to be a holy FOSS war.

"holy FOSS war"?

Why not have a commissar sit behind every gamer to make sure they're not cheating?

That's a startling degree of access to give to these people for access to cosmetic micro-transactions.

But, I guess if all your friends are snorting coke in an alley, FOMO will have you right there with them.

Do you use a separate user to play games? If not it's kinda useless as a user space process can read all your files and memory of running processes of the same user.