Well, using Tor doesn't mean you're looking to abuse a website. But you may find out that 99% of your Tor traffic is abuse and decide it's worthwhile to you and your users to block it.
I find it hard to believe that a majority of people running Fortnite under Wine would be attempting to cheat. Even if Wine would make cheating somewhat easier, would it really be that significant?
It seems far more likely to that most players are just using Wine for its intended purpose—to play Fortnite on Linux.
I would imagine Wine is in a similar predicament.