That’s how they getcha. First you install Linux because it looked fun, then you buy a small NAS to protect your most important data, next thing you know you have a server rack in your basement and a half petabyte of storage. Don’t listen to him, OP! This is the path to many financial woes. Run while you still can!
Valve refunded me after rocket league dropped Linux support long after I paid for it. This was before proton made it work again regardless. So there is history of it happening.