WINE has been in development for a long time, and we're at the point where thousands of games are now native for Linux.
But MANY thousands more for Windows which is the whole point of Windows compatibility tech for gaming purposes on Linux.
I have seen zero evidence that WINE or similar things are "hurting" native linux game development. They are actually increasing native development by demonstrating demand.
The thing that hurts native Linux game development today is low market share. All I was postulating are what ifs that are many years away.