So WebTransport still fails us in a few ways:
* You still lose Tor support. Tor is TCP based.
* You can't connect to a server and verify it by it's public key, you have to have a hash of its certificate somehow
* Client-side certficates still use Web PKI, so can't be used for AUTH
* You layer on a lot of complexity (https://www.w3.org/TR/webtransport/ is not straightforward) with marginal benefits.
I agree with nostr:npub1w4jkwspqn9svwnlrw0nfg0u2yx4cj6yfmp53ya4xp7r24k7gly4qaq30zp about being "connection type agnostic". A message-based protocol can run over any transport, including bluetooth, or paper airplanes.