They should have named it better then because they way GNU is pronounced is awkward to say in conversation and doesn't convey the point like most other OS names do.
Logically sure it makes sense to call it a GNU system or even GNU/Linux but casually it really doesn't compared to Linux, especially when you take name recognition into account
If you aren't in a rush I'd recommend waiting for a year. GPU prices are starting to go down but both AMD and Nvidia know they can still charge way more than they were in the past. With intel's new cards coming out on the low end they might be able to get AMD/Nvidia to release a more competitive lower end card to compete.
Also on the lower end and also weirder end the steam deck is also a full PC for $400, it would be playing new games reasonably well in 720p which looks good on its screen but it will also take a while to get into your hands, at least another year if you got into the queue now.