I'd hate for you or others to read the GP comment and for your perception of HN to be altered, without any further detail or nuance to be presented for consideration.
Gumroad is not a YC company and its founder has no influence over HN or YC. Joe, whilst being one of the most successful, is still just one YC-backed founder out of more than 10,000, and doesn't represent YC. Paul Graham, YC's co-founder (who, whilst retired, is still actively involved and is very influential at YC) heavily criticises the current U.S. administration almost every day on Twitter. The other figures named in the GP comment have no involvement or influence on YC, and indeed some have had very hostile disputes with YC partners and notable founders in the past.
This is not to claim that we moderators are perfectly impervious to every influence and incentive at every moment. Awareness of our own potential to be biased and influenced is essential to being able to do this job effectively.
I just think it's important to point out that things are not nearly as simple as the GP comment purports.