I actually tend to observe the other effect in most intellectual spaces. Any liberal supporting result will get a free pass and be repeated over and over again, while any conservative leaning claim will be torn to shreds. Of course, you’ll see the opposite if you hang around the 50% of people who voted Trump, but not many of them are in the EA community.
Do you know of any spaces that don’t have the problem one way or the other?
I would say that EA/Less Wrong are better in that any controversial claim you make is likely to be torn to shreds.