I think a lot of this is missing the point. The features HTTP/3 provides are features of value to datacenter and large scale deployment. Most sites deploying

I think a lot of this is missing the point. The features HTTP/3 provides are features of value to datacenter and large scale deployment. Most sites deploying off-the-shelf solutions like nginx or whatever don't care. Most behind-the-reverse-proxy services don't care. So Cloudflare cares about HTTP/3, but their customers mostly don't, except the biggest ones. Use the tool for the job. If a single-threaded Python server running HTTP/1.1 works for your IT app, then use that. HTTP/3 has nothing to offer you.