I don't think anyone expects people here to "blindly rate" a player. I dont think anyone hates a player either, certainly not for on field issues.
I think the issue is that disagreements on players get way too personal. So heated comments are made, the same points are driven home repeatedly and in general these aren't really accurate assessments of the situation, rather emotional responses to personal disagreements between forum members. But the net effect is the appearance of either blind support or hate for the player himself and not grounded in how they're actually doing on the field or their potential.
I think a lot of it could be improved by a bit less all or nothing, nuance free posting which stakes out a binary position, and much less digging at other forum members, even when you feel baited to do so or personally slighted. Just cut the circuit and move on and we'll have a much better level of discourse here.