The current trend as far as I can tell is that it's easier than it used to be to host a web server. So that also has long term implications.
It's really tricky to predict exactly what web servers will do, but I don't see any reason to think it well ever be hard to set one up. You're fixating on a very specific warning and the way you're extrapolating into the future assumes that half the software changes but the other half doesn't. It just doesn't work well to predict things. And we already have solutions, they're just used less because HTTP/1 is so easy.
Another thing to consider is that the number of household devices that need access is growing rapidly. We're not going to break them all.
It's really tricky to predict exactly what web servers will do, but I don't see any reason to think it well ever be hard to set one up. You're fixating on a very specific warning and the way you're extrapolating into the future assumes that half the software changes but the other half doesn't. It just doesn't work well to predict things. And we already have solutions, they're just used less because HTTP/1 is so easy.
Another thing to consider is that the number of household devices that need access is growing rapidly. We're not going to break them all.