I disagree. In fact I'll present the counter example of "myself". I don't agree with the OSIs definition of open source, I think it run contrary to the plain meaning of the term, and is contrary to pre-OSI use of the term. I've argued that numerous times on this forum (and I'm going to avoid repeating these arguments in depth here, just google "gpm Open Source site:news.ycombinator.com"/"gpm Open Source site:lobste.rs" and you will be able to find the arguments).
I have never pushed a product claiming to be open source that does not meet the OSIs definition, nor do I anticipate I ever will, since that seems to be a great way to make discussions about the product devolve into arguments about licensing, which is terrible advertising.
The fact that these arguments usually only come up when there is a reason to argue, i.e. someone has used the term in a way outside of the OSIs definition, does not mean that people only think the right definition of the term is something else when it's for their own benefit.