In Russia the DPI seems to look at some initial QUIC SNI and block it or something.
https://ntc.party/t/ограничение-http3-quic/1823
AmneziaWG deploys a slightly different configuration for each user so there wasn’t any one thing the censor can block, because it looks like a call.
Let’s hear what the Tor devs think about this.
Cool, good luck!