It is part convience and part necessity. My entire infrastructure is currently x86 and introducing ARM into it seems like a hassle, if i develop and test software on my x86 based workstation i expect it to just work then, not having to deal with either compiling to ARM or using emulation. Also part of this that currently everything I use runs Arch, which only officially supports x86.
Which brings us to necessity, my software currently runs with manually written simd instructions. Ofcourse I can write ARM NEON polyfills for these, but again that takes a lot of work.
So while not impossible to use ARM it currently is a lot of work to use. I’m gonna save that time for when the big riscv migration comes.
Might aswell be calling up Sukhoi and asking if they have some spare jets laying around.