>Open Source is a term coined by the OSI.
No, it's not:
http://www.catb.org/~esr/open-source.html
And even if it was, popular terms reach beyond the persons/organizations that coined them.
Unless it's trademarked, it's just a term all kinds of people use, many of which don't know/care about OSI.
In fact:
https://opensource.org/pressreleases/certified-open-source.p...