You'll get no argument from me here. As I mentioned before, I don't think that the average gamer will actively go and buy a Mac for gaming any time soon. But Apple Silicon opens new possibilities. If you have previously bought a MacBook Air (for study or work), playing games on it was pretty much out of the question. Same pretty much for the 13" MBP (it could run games like Civilization series, at reduced settings, but not much more).
Now where every MacBook Air essentially comes with a performance promise of a mainstream gaming laptop, it opens up a lot of possibilities. If you were a Mac user interested in gaming but unable to play games because of weak Mac GPUs, well, things have changed. If you are a Windows user on a budget who is interested in Macs (for productivity, development or study) but were holding out because of weak Mac GPUs, well, things have changed too. Even more, in the Windows world you still have to make a choice what you get for your $1000 — a budget gaming laptop (with bad screen, bad keyboard and bad battery) or a budget "office" laptop (better battery, more portable, better for work). Apple Silicon makes this choice pretty much trivial, since there is no choice to make. You don't have to sacrifice anything. A MacBook Air can do it all, pretty much.
We can discuss the reasons why there are no more games on Mac all day long, but in the end it pretty much boils down to performance. Porting can be either a trivial or a non-trivial effort (depending on how sane your software architecture is), but why would you bother to ever port your game if an average Mac user with only get a 10fps slideshow, with major stutters due to crappy drivers? Having fast GPUs and reliable performance is extremely important, and there will be more high-quality Mac game ports. I am optimistic.