Ah, OK. I certainly had that wrong then. I had it in my head that the language was incubated at Mozilla and major efforts like documentation were funded by Mozilla / worked on by Mozilla employees.
Well, this is getting a bit philosophical but seeing as you don't mind discussing!
What you say may be true of Mozilla, but it's not true in general, is it? I mean, suppose two authors work at the same "institution". I think it's bound up in our notion of institution that the observer of this situation might expect, or at least not be surprised if, their creative output is subject to shared influences. So, OK, the theory I was floating was dubious because of its lack of real justification! But I don't think its reliance on a notion of institutional culture (shared influences) was problematic.