Ayaneo and GPD are too expensive for to be compared to consoles imo. They’ve been above a grand and in general similarly priced as a laptop with the same internal hardware. Edit: The Steam Deck basically halved the price for an powerful x86 handheld, and made it comparable to a Switch. This is imo the only reason it sells so well.

If they’ve already installed Arch I don’t think there’s much difference to EndeavourOS. Both use the official Arch repos, and the latter mainly makes installation simpler.