> Lack of that is a weird omission if Apple is trying to act like they have a gaming platform.

Apple has a huge gaming platform, and it isn't the Mac.

https://www.ign.com/articles/apple-made-more-than-nintendo-s...

However, I imagine that they'd still like to sell more games in the Mac App Store (in addition to iOS ports, iPad games that can run on Apple Silicon, and Apple Arcade subscriptions) and this might help.

It might also make it easier to port games to Apple Arcade.