It's not that deep isn't it?
Some people have higher likeability, hence when they posts they naturally get more likes per average.
Getting posts ignored just means indifference, which is most of the members
Dislikes implies negative reactons.
Eg :
Fuji said apple is red, he gets a lot likes and positive reactions
You said also said apple is red, but only get negative reactions.
Now that's a case of clear bias though.