AI Overview Garry Newman, creator of Garry’s Mod and Rust, has expressed significant frustration with Linux support, stating in 2016 that if he could do it again, he would have never supported it. His issues stemmed from receiving high volumes of bug reports and “abusive” feedback from Linux users, leading to a difficult relationship with the Linux community.

Regret over Support: Newman has indicated that supporting Linux was not worth the trouble, citing the small user base compared to the maintenance required.
Rust & Anti-Cheat: Rust does not officially support Linux, partially due to issues with Easy Anti-Cheat (EAC) compatibility on the platform, although he has worked on bringing it to platforms like Steam Deck.
User Feedback: The decision to deprioritize Linux caused tension, with some users calling his reactions as unprofessional, while others complained about the quality of the Linux port. 

While his comments from around 2016 were quite harsh, they were often framed within the context of the high cost of supporting a small user base for his specific games.