API is an exposed interface of any library, standalone program, etc. It's a very wide term. But stupid hipstors reduced it to their stupid understanding of a web RPC.
Yes, API means much more than web RPC. But the "web hipstors" are not wrong in calling their services API either. Educating people about the multiple other meanings of that word is fine, condemning people that use it for a limited (but correct) meaning seems very unnecessary to me.