The guy is refusing to spend money on what you think is in "the [best] interests of wordpress users", presumably that is what you think is in your interests, and you're complaining about that.
It's a gpl project, if the people complaining about how it is maintained care, they are granted the right to step up and do something about it. For example fork it, either wholesale or a light version with things you don't like stripped.
Collectively, users have these rights. I don't think they have any right to expect the guys doing to work to do it for them, or even give the time of day to some leech-only "community" that shows no gratitude or useful contribution, just demands and entitlement, and doing as much as possible to blacken the name of the guy producing the work they are relying on.