Agreed. I made a comment to my family after the episode ended that it was very convenient (/sarcasm/) that Boba just left after being the decoy. I surmised that the narrative reason is that Luke and Boba couldn't meet again, for now.
Disclosure: I'm a fan, but not a "super" fan, of Star Wars.
I thought the S2 finale was a very good episode, period. And S2 was better than S1, which itself was pretty good. I know The Mandalorian was meant to be a "side" story to the main saga, but when baby Yoda/the Child was revealed in S1...