It doesn’t read as two lovers. They are very codependent and they use touch to express feeling.
If my sibling/parental figure was dying infront I’d me I would cry too? I’d bawl my eyes out. I’d hold their hand because that seems like a terrible way to die and people need comfort? Support their weight?? Dean died standing up. You’re just going to step back and watch them drop or something??? Forehead touching? Heck yeah, you get to see the person’s face and let them see yours for the last bit of their life, why wouldn’t you give/want to have that comfort???
But what others have been saying about the ending being about family? And that that is why they are fine without Cas there??? No. Castiel has been a part of this little family since the original Team Free Will, which is why they went to such lengths for him, why he was involved. He is family, just as Ellen, Jo, Bobby, Charlie, Kevin, and a whole other bunch I can’t think through a headache to put down.
For them to barely acknowledge him after the Empty stole took him? The longest family member next to Bobby Singer?? Slap in the face to all of those people who got involved because of the found family trope that embraces the series. They gave the message that family didn’t start or end in blood and they did that with it.
So yeah, people have a right to be pissed off regardless if they were for or against Destiel because that is not how you treat family.