Yes, this is the case. Indeed, many times. I have personally voiced many concerns about different aspects of the governance and workings of the Community. And in 2019 a very clear and significant case was raised when some dispute over IP (a domain name) surfaced. In this case, we declined used of the domain name following Core's request, but raised --again-- concerns over the governance of Postgres.
The answer to all of these requests? Outright denial. Silence. Nada. There is no willing to change anything. Also one year later I voiced some of these concerns publicly (https://postgresql.fund/blog/is-it-time-to-modernize-postgre...). Same outcome.
So yes, I have at a personal level and we have at the Foundation level tried everything we believed could be done. And we perceived trademarks are more at risk with PAC and PEU than us, and we saw that some were not registered, so we proceeded to protect them and offer them openly to the Postgres Community (https://postgresql.fund/trademarks).
And as stated publicly, we're ready to transfer them to a single entity. It just can't be the current ones.