I think any meaningful improvements that could have arrived by improvements to the Hypertext Transfer Protocol itself will have and can have been eaten up by al

I think any meaningful improvements that could have arrived by improvements to the Hypertext Transfer Protocol itself will have and can have been eaten up by all the stupidity of modern web development. So no, I don't think anything meaningful has arrived in terms of performance, otherwise we'd all be singing its praises. Rest In Peace, HTTP/2 Server Push.