I'm a developer deploying code to JVMs running in a PaaS (Google App Engine). I don't know or care what the architecture is.
That single instance you're running on already took half a dozen or so other systems developers and more before it got to you, so in your example you're the minority.
It's because of the work they've done, that you can not care about the architecture you're running on, not in spite of them.
Linus' argument is that x86 stays on top because everyone is developing with x86 at home. It's much less convincing to argue that x86 will stay on top because the people writing JVMs use x86 at home. There just aren't that many of them, and if they get paid to write ARM, they write ARM.
If AWS switches to running JVMs on ARM, and passes the cost savings onto me, I'd be in no position to argue.