i cannot say who the 'we' is, but i suspect in some circles this may hold true. i do challenge that this is a reasonably held belief because it is an expansion of the historical responsibilities generally held towards those who would wish to open up their source for others. it may even suppress how much code is openly shared (since most engineers don't enjoy being community managers)
Stallman explains: "The two terms describe almost the same category of software, but they stand for views based on fundamentally different values. Open source is a development methodology; free software is a social movement."
Clojure is Open Source by this definition, since it is developed by a collective group, as opposed to a permissibly licensed but static artifact. People are welcome to run their projects however they like, but the entitlement comes from the philosophy that Open Source is more than a contract, and is better when there is participation. Labels matter because they set expectations – Apple does not call their Public Source "Open Source", and people don't complain because they understand the difference.Apple recognizes the state of this confusion and perhaps wisely uses a different definition to avoid conflict. The Clojure maintainers do not, because they interpret Open Source by its original definition. Just because a collective group is involved does not mean its maintainers are compelled to the responsibilities conveyed by Stallman et al's extension of what open source is.
Open Source isn't all about you, but it is a little bit about you.