Nothing keeps an end-user from rescinding it's ISP contract as soon as they ever slightly cross the line of filtering a single packet.
I agree in that end-users shouldn't give a dime about DNS privacy, it should be private by default, but it is up to us to promote the correct protocol over the "hacky" one.
If DNS-over-HTTPS is superior, then why don't we shove everything down 443/TCP? Or better yet, why don't we get rid of TCP altogether and send everything over a port-less encrypted dynamically-reliable trasport protocol? Surely middleman couldn't distinguish between traffic.
Ports are there for a reason. The fact that they are used with anti-end-user intent doesn't make them (or any protocol that runs on them) inherently bad. Yet one thing that makes a protocol better than another one, given set of requirements, is efficiency.
By the way, if I were to switch my DoT server from 853/TCP to 443/TCP, the port wouldn't be a problem anymore. Per your standards, now DoT would be better than DoH, wouldn't it? Same results, smaller payloads.
