I dunno, this sounds like it might actually be useful. (Haven't read the paper yet).
In that era we had a whole class of professional architect types who spoke at conferences in these abstractions. I should know, I was adjacent to that role and learned to speak a pidgin form of it.
Those people are mostly gone - not sure where they all went. This paper looks like the soldier in the jungle who never heard the war was over.
All we really need is a simple object access protocol to link it all together.