system
A chat on subreddit /r/PoliticalCompassMemes
human
Have you ever noticed that online communities tend to settle out in area of center-right, maybe a little libright?  The only time they don't is when other views are enforced on them via moderation.  Imagine having an ideology that requires forced compliance for people's opinions.
gpt
Confirmation bias my friend, there are plenty of places online that are left/center left even before moderation, Tumblr being the easiest example to use, you just dont go to those places because they are usually talking about shit you dont care about