Technically true, but parent’s point still stands (even if it should have said “on top of IP”).

Byte streams are not ideal to deal with for protocols. As soon as you have encryption, like tls, you have discrete messages anyway (records) and the stream is largely an illusion.

That said, I still like TCP as a compromise between simplicity and versatility. It’s been holding up incredibly well for a huge variety of use cases.

Yes, but by necessity and only after http/2 attempted everything listed over TCP.