It's not a problem with ARM servers or vendors that care about building well designed ARM workstations.

It's a problem that's inherit to mobile computing and will likely never change unless with regulation or an open standards device line somehow hitting it out of the park and setting new expectations a la PCs.

The problem is zero expectation of ever running anything other than the vendor supplied support package/image and how fast/cheap it is to just wire shit together instead of worrying about standards and interoperability with 3rd party integrators.

How so? The Steam Deck is an x86 mobile PC with all the implications of everything (well, all the generic hardware e.g. WiFi, GPU IIRC) work out of the box.