Sure. I’d do it.
As it happens, I am an experienced systems developer and have done a fair amount of reverse engineering. And even made a game cheat once (a very minor one), though I never distributed it.
I have no need to make money like that, but supposing I were out of a job for a while and burning through my savings, I’d consider it, at least if I could ensure I wasn’t committing an actual crime.
I pretty much consider multiplayer games to be a toxic mess anyway, so adding more cheating to the mix wouldn’t bother me much. In fact I’d probably consider it a personal challenge to build a system that was undetectable.
Personally, I wouldn’t use it. I’ve no need for fake internet points to begin with, let alone faked fake internet points.
I wouldn’t pretend that there’s anything laudable about writing hacks… but there are scummier jobs out there.
Ideally, I’d stick to cheats for single-player games, like the trainers of yore. That’s 100% ethical. But I don’t think there’s a market for those.