Duo to Forza tie a lot of thing to online play, such as online car auction, online events.
So, Yes, Cheating in Forza is a ban risking. Although you can play the game solo without interacting with others.
Forza ban only effect the title you got banned. Got ban on Forza Horizon 4, you can wait for 2 years for next Forza, unless they change the policy.
For the other games, not just the one on steam, we may need to look case by case.
If the games tie single player element to online as much as Forza, maybe.
@rXurr this made the Set credits option finally work for me. Thank you
Haha! Thanks man! it works when you do this