I've been a Mac guy for almost as long as there's been a Mac, but in that time the distinguishing characteristic of Apple support for Mac gaming is that it comes and goes and comes and goes. With iOS, it's been steady but constrained by the limitations of the hardware. On the Mac it's been feast or famine, and part of that is that Apple still doesn't seem to have articulated a solid roadmap. There are too many darts and weaves and feints. Is the iPod Touch a gaming platform? Yes but no. Is the Apple TV a gaming platform with a stripped-down game controller? Yes but no. Does Apple support OpenGL? Yes but no.
That doesn't mean there are no fun Mac games -- I probably put 400 hours in on Torchlight II, which is a blast -- but even Torchlight II had to wait two extra years for a Mac release.
Four years ago, encouraged by my gamer son, I finally admitted the truth: I could spend eight hundred bucks buffing a Mac for good game play, or I could spend the same on a Windows tower with GPU and not constantly feel like I was knocking my head against the wall.
So I wish Apple gaming well, and it will be interesting to see what comes of the architectural changes associated with Apple Silicon -- unified memory model, TBDR and such -- and whether that gives gaming a boost. It could happen, and I hope it does. But if it does, it'll take years, and they'll have to convince the game devs that this isn't just another feint. So now, the Mac for most things, the PC for gaming and 3D stuff.
Edit: As a hobby I play with Godot, a reasonably mature open-source cross-platform game engine. The current series, 3.x, uses OpenGL as the foundation of their Mac support. But they're also taking seriously the Apple deprecation of OpenGL, and the 4.x series under development (and likely at least a year away) will use Vulkan where supported, and MoltenVK on the Mac and iOS.
It would make a great great deal of sense for Apple gaming if Apple decided to officially support Vulkan, or even to officially support MoltenVK. But they don't.