Except you can do http1 requests in bash easily and many http3 libraries are bad anyway so you don't get the advantages of using it.

I wanted to do something fast using http3 but it ended up being way faster using ad-hoc code I wrote using http1. It would be even faster if I did it with http3 but hand writing for that protocol is a nightmare so here we are…

edit: downvoting me will not change the reality.