You can tap the sign as much as you want, that battle was lost a long time ago. REST is just the common term people use for HTTP+JSON RPC.
The Web (the prototypical REST application) had a lot of good ideas, not just hypermedia. It certainly makes sense to attribute those good ideas to REST.
See also: Agile. DevOps.
It's pretty common once you look.
Rest pedants don’t care if you don’t use rest, as long as you don’t call it rest. It’s hardly a difficult concept.