Yes, this thinking applies to the (latest) computers, especially these with Apple Silicon.
But it wasn't true before that. At least from 2006 onward you could use
Boot Camp and install Windows on the Macs, if needed. Also, some older PowerPC games got an Universal binary release. Many AA/AAA games, even indies had a native Mac port. The biggest boom was in the leta 2000 and than trough the 2010s, up until to the end of the decade.
The biggest problem was, that many (most) of these games had only 32-bit versions or were using 32-bit code. With macOS Catalina or never, this segment died.
And not to forget the x86 Mac Pros could accept (and still accept) many different GPUs. And the late generations of x86 Macs could use external GPUs through Thunderbolt 2 and 3.
Where as in the new Macs, especially these ARM integrated you are limited to, whatever Apple puts in there. So your only choice will be the games, that will be available in the Mac Apps Store* or on Apple Arcade (how long will this service last?)