Non partisan politics means taking a neutral stand on issues and mainly applies to judges running for office. They aren't registered with any party or movement and don't subscribe to any political agenda, at least not in their decision making. Sadly many judges are political, thus making the term non partisan a thing of the past.
On discussions boards, there is no such thing as non partisan politics when statements are made that anyone can see as partisan. Just because the poster didn't mention a political party or name a politician, doesn't exempt the post as being partisan political.
I don't know anything about the owner or admin of this site, except they posted NO POLITICS in bold letters and when joining, you agree to that rule.
I guess I am old school, where NO means no without any exemptions.