I’m more familiar with the subreddit than the actual test created in 2001. With that being said, generally Political Compass reinforces the views of in groups (neoliberalism, CenTRism, etc) while using the veneer of “oh, we can all shit on each others ideologies RESPECTABLY” to discourage actual discussions and tone police people who are rightfully upset with hate speech.

This went about as well as you’d think it did, with the sub reaching national headlines for somehow equating that gender politics = grooming, and the dog piling made many leftists leave. I haven’t been there in ages but I’d presume the people still using that site are now akin to astrologist/ Myers Briggs people who think they know everything about a person and their viewpoints based on some arbitrary questionnaire whose methods have never been published, and more importantly use that to avoid critical conversations and allow literal Nazi’s a seat at the debate table.

Sorry if this is an incomprehensible blur, I haven’t had coffee yet

First of all, it was developed by this dude https://en.wikipedia.org/wiki/Hans_Eysenck big-time racist

But this is a pretty good takedown of it https://youtu.be/9nPVkpWMH9k