And along with that go assumptions that if you disagree with someone on which character deserves understanding it must be because you're a stan of that character and so completely biased, rather than just seeing a grey area a little differently than the other person.

Ah, this takes me back.

I'm not fannish about SPN and only saw the last minutes of the finale (I initially only peeked, but then HAD to watch the whole thing through, because of the epic LULZ). What exactly is fandom losing their shit over?