A disagreement over the PostgreSQL trademark

I don't disagree that there are possibly points of improvement. The most charitable explanation is that it is a well-meaning person going about it the wrong way.

But as for PGCAC being a problem and possibly going rogue, the answer to that is determined by the articles of incorporation and the by-laws (I think that's the correct term, here we call them statutes). AFAICT they are not on the website (here, they are public, not sure about Canada). Without them you can't really say what the board can and cannot do.

Trademarks & open source are tricky at the best of times. I see they use SPI for donations which is a much more mature organisation.