Sam Winchester vs The Heart of the Show: Why Sam Winchester is unsympathetic

I've mostly written this for me. I needed to do this as a way of trying to understand why I feel sympathy for Sam (at the moment and usually) when it seems much of fandom doesn't. It's puzzled me because even though I know we each see the show with certain goggles on I've struggled to understand how a few lines of dialogue seems to have removed all sympathy for Sam in S9. Even from Sam!girls.

I contemplated what's gone before and started to see a pattern.

( Sam Winchester vs The Heart of the Show )