Re: Someone really needs a refresher.
Nor is TCP "the transport layer" or IP "the network layer".
The OSI model does not fit TCP/IP well. It doesn't fit anything well, except rump OSI implementations such as ISODE.
More importantly, if a reader doesn't know what HTTP/2 is, the sort of handwaving gloss that's used in the article will be no help whatsoever. It's neither correct nor usefully incorrect.