Yeah, the biggest issue is that even the cutting edge arm gpus just don’t pack enough power. I have an arm gaming device, and while it can play a lot of games, it struggles with most modern 3D games. Some of it is compatibilty/support issues, but a lot is just the lack of power these chips have.

That being said arm devices are great for most indie games, but they’re unlikely to be your only gaming device for the time being.