Reverse proxy for ssh3

Since ssh3 uses http/3, it is theoretically possible to host it behind a reverse proxy. Then there is no need to use x509 certificates (there is no such option now).
I tried to host ssh3 behind angie (a fork of nginx that can use http/3 both ways), but I'm running into the following problem (with verbose):

> DBG dialing QUIC host at myhost:443
> DBG QUIC handshake complete
> password for https://root@myhost:443/ssh3?user=root:
> DBG try the following Identity: password-identity
> DBG send CONNECT request to the server
> ERR bad SSH version fields
> ERR Could not parse server version: "Angie"
> ERR Could not open channel: returned non-200 and non-401 status code: 400

And Angie log:

> quic reserved transport param id:0x4d4, skipped while handling frames, client: 10.10.0.4, server: 0.0.0.0:443
> quic unknown transport param id:0x20, skipped while handling frames, client: 10.10.0.4, server: 0.0.0.0:443
> client sent unknown pseudo-header ":protocol" while reading client request, client: 10.10.0.4, server: myhost

Is my idea possible?