Earlier quoted context omitted.
> it's not a maintainer's responsibility to follow best-practices, respond to feedback/PRs, or respond in any coherent way to anything asked of them. It is when they setup an open source project that has that appearance and is framed as being such a project. It is entirely the maintainer's responsibility to establish the type of open source project it is. If it was just a toy hobby project and that's all it was meant…
Read the license, it frames the project exactly.
However professional and well-presentend the project is, at the end of the day maintainers are doing this primarily because they like it. If they don't like doing something related to the project then no one can blame them for that.