Comment by Expurple
SQLite is developed in a similar way, by the way. Maintainers aren't required to accept community patches. It's not part of the four freedoms or whatever. Realistically, open-source licences only give the user the rights to use the software, redistribute it and fork if needed, but no "voting" rights regarding the upstream copy.
You're talking about open development and governance, which are often associated with open-source, but aren't required.
You are correct, but I'm not sure that the colloquial usage of the term "open-source" is very consistent with propietary platforms that just happen to make source code available