BUT, I also think that these things needed to be said, however painful. Maybe they can move forward, I don’t know, I am (was?) kinda positive about this season, I see more depth to say the least.
Sam is not completely wrong but not completely right either. You can’t ‘abandon’ your brother just when he needs it the most, cutting off the brother thing. Because saying those things and acting in that way made Dean thought that Sam doesn’t love him anymore, that he’d have no problem living with him dead (I don’t want to think it’s the case).
And Dean has a lot of issues, made a lot of bad choices that we all know, including going against Sam’s wishes and tricking him into saying yes to the angel. We’ve said that a million times..
They should just work out these problems as adults and most of all they should get rid of the parent/child relationship they’ve been having since they were kids, (I’m looking at you John).