Why TF does it matter so much if you cheat in a single player game that they have to take such drastic measures to prevent it? In multiplayer, competitive games, I sort of get it, depending on context, but single player games, no way. I mod single player games all the time. It's one of the main reasons I like PC gaming over console. I'd never buy a game that went this far to prevent something that has no effect on them or anyone else.
Something I often find myself explaining to my friends who I game with is just how much objectively terrible shit you can get gamers to not only tolerate, but support as long as you promise to "get rid of cheaters"... which is a hopeless goal. It took a lot of explaining to get them to accept my argument of "I would literally prefer cheaters over a new root kit for every game"