> x86 is on the way out in for most consumer devices.

Define "consumer devices"? I am holding on to my AMD Ryzen machines until they literally fall dead. I have no complaints from them. Maybe some modern or even next-gen ARM CPUs will be even better on Linux but I don't think we are quite there yet.

x86_64 is here to stay for a long time still.

But maybe you literally meant x86 as in the 32-bit CPU arch? If so, I'd mostly agree but not quite; they could be used in low-power micro-PCs for a long time still as well.