You still have to opt into it by enabling it in the nginx.conf. I don't think it's worth it to add stuff to the nginx.conf, but it would be neat not to have to recompile nginx.
https://nginx.org/en/docs/quic.html Index: Makefile =================================================================== RCS file: /cvs/ports/www/nginx/Makefile,v diff -u -p -r1.177 Makefile --- Makefile 16 May 2024 19:07:27 -0000 1.177 +++ Makefile 16 May 2024 21:50:55 -0000 @@ -41,7 +41,7 @@ PKGNAME-passenger= nginx-passenger-${VER PKGNAME-rtmp= nginx-rtmp-${VERSION} PKGNAME-securelink= nginx-securelink-${VERSION} -REVISION-main= 0 +REVISION-main= 1 ONLY_FOR_ARCHS-passenger= aarch64 amd64 arm i386 @@ -191,6 +191,7 @@ CONFIGURE_ARGS+= --prefix=${NGINX_DIR} \ --with-http_ssl_module \ --with-http_stub_status_module \ --with-http_v2_module \ + --with-http_v3_module \ --with-http_xslt_module=dynamic \ --with-mail=dynamic \ --with-stream=dynamic \