I love that they couldn’t hit us over the head more that Dean doesn’t give a shit about Cas having his mojo or not, PER SE. He appreciates the advantages of a powered up Cas for sure, but first of all he cares about /Cas/.
I know I am about to disagree with some of my favourite meta writers now, and I will apologize in advance. I am sure you have a point, and you have expressed it well. Also, as someone who is not in the industry, I may lack the intellectual capacity and background to make a proper analysis of what is going on.
However, as someone who is basically a non-shipper but a great fan of the Dean/Cas relationship, I have to say it didn’t feel any different to me in 9x03 than it felt in previous episodes, including season 8. And yes, if this means that I disagree with the notion that Dean/Cas in season 8 ended on an outright romantic note, I have to admit I probably do.