I doubt it's anything to do with Jared. EK has made it clear that Dean is his Marty Sue and the writers are a bit too into fan-service. This does not encourage fair treatment of both characters.

I saw a lot of potential in the episode but it was very badly executed. Frankly, I don't agree that the season started with promise: as soon as they said "angels" I knew it was heading down the tubes. That's such a mistake. Yeah, I know Castiel is popular - I like Castiel - but these writers are not smart enough to deal with the philosophical questions that throws up.