Ya, they looked like a competitive team at the time, so it didn't seem crazy to me. Their top 4 d was Andersson, Weegar, Tanev & Hanifin which is really good. Goaltending was an issue. Markstrom was coming off a .922 save % and followed it up with .892, so you could point to that pretty heavily imo.
I'm not sure where that MTkachuk info comes from. At the time, the tone seemed to be that he was tracking to get out of town. I still hold that belief, he wanted out and cleared the path for that to be possible. So be it, that was his choice and now he gets his cup with a very fortunate team.