Curiously, since most web traffic come from mobile devices, you have the situation where web developers on x86 machines are writing JavaScript code that run on ARM devices. Doesn't seem to be an issue so far.
True, taking this further, even react-native JS is running fine on arm devices right. I suspect it's more the "untested" waters of backend-land that'll suffer more here
Mmmm, I think you're right eventually, but how long it'll take, and how much of the more complex stuff will work is more my concern.