By whose standards? I'm European, so for me the US Democrat party is too far to the *right* to be electable; but by historical American standards, the impression I've had is this site has been centrist.
Conversely, the current standard of the US right wing seems to be that Bush Jr and Cheney were lefty liberal wokes who undermined the US national interest by working with NATO and Europe instead of taking every opportunity to undermine both…
Most of the time when I do see blatant “rightposting” it’s so misinformed and provocative to be indistinguishable from trolling / baiting, so I can’t even tell if it’s downvotes for disagree vs downvotes for suspected trolling.
The less blatant “rightposting” flies quite a bit under the radar, pretty much by definition, which is what the grandparent comment was probably referring to when they said they interpreted HN as leaning right. More like laissez-faire economics.
The open embrace of the fascist / nativist right in SV has been more recent, and it has empowered this second Trump administration. The calculation is presumably that they can curry favor and consolidate power.