Feelosopher

Maybe that’s the point, though? The Cosmere is going to have themes throughout. Letting go of the powers could be one of those, and for a good reason.

That's not what this scene was lol. I don't think at least. There has been no indication that Kaladin or Adolin are anything but straight. It was because of their brotherhood, and the fact that they're closer than Kaladin and Shallan. She wouldn't be jealous because of some sexual implication, but that Kaladin showed Adolin more affection despite Shallan and Kaladin being the two that "started it all", as she says shortly after.

Kaladin's journey with depression has been quite explicitly not about finding poor ways to cope, but rather confronting it and reaching acceptance, while also not letting it define him. He and Syl becoming romantically involved would not sully his story with depression. Sometimes a romantic relationship is helpful, though, and there's no reason to pretend it's not in a fictional story. It becomes an issue if the reason for romance is relief (both in reality and if that's the message in a narrative), but at this point in Kaladin's story it so clearly would not be that. Regardless if it's a relationship with Syl or someone else. To add, it's okay to do stories about maladaptive coping mechanisms, good even. Specifically in Kaladin's case, though, a relationship with spren or human would not be that because of what he has already gone through.