IIRC playing counter strike on Mac was wonky anyway due to Mac's mouse acceleration, so I super rarely played CS even tho I had it installed and liked it.
Funnily enough, you can finally turn off mouse acceleration in macOS Sonoma without jumping through any weird hoops that may or may not work anymore. It's a checkbox in the Mouse preferences pane now.
If Apple really wants games to bother supporting their platform of questionable financial viability, they may need to learn a lesson that other platforms figured out a long time ago: you can pay a developer a bunch of money and they'll make their game run on your system. I know that's a big ask for a small company with $166 billion of cash sitting around, so I don't expect it to happen.
Sad to see Mac development shops bailing on the platform as it finally comes around to having useful GPUs in all of their computers. Blizzard used to have all their games cross platform up until Overwatch and now Diablo 4, but apparently it just wasn't worth doing anymore.
I think it's just been decades of the Mac mostly sucking for gaming, people don't even think about buying games on it. If you want to play games you already own something that's better for that.
Game devs already support their primary mobile platforms, that make them the most money. Macs are basically for work and low intensity recreation at this point. Gamers don't buy Macs, due to low customizability.
And yet Apple is putting a bunch of work on the technology side to try and get more games on to the Mac. So someone at Apple has finally decided it matters a bit and they could go after this.
Where I expect them to fall short is on convincing major games that Mac support actually worth doing, regardless of what tools Apple can provide for it.
They're at the point of waving around a handful of games (Death Stranding, No Man's Sky, Resident Evil Village) and having Hideo Kojima on stage at WWDC. But I don't think releasing new dev tools on its own is going to take them from here to Counter-Strike 2 and Diablo 4 making their way back to Mac support.