I doubt many people would consider it easy. How many people running their stuff on EC2 would like to hear at some point that to upgrade the newest instance type you need to remake your VMs/containers?
I mean it's irritating, but we all have CI/CD pipelines now don't we? I'd see it being a project for a single team for a month to get it changed, tuned, and verified. We regularly build both x86 images and ARM images for devs on Macs. It's really not that difficult when you aren't redoing manual steps.