Anyway, I dislike the use of Luke like a lot.
First off, the CGI face shit looks really fake. It didn't work with Leia and Tarkin in Rogue One, it didn't work with Leia and Luke in Rise of Skywalker and it still doesn't work here. It's some massive uncanny valley stuff, where it looks slightly off which makes the whole thing look fake. I'd much rather Disney just recast or, ya know, not use Luke at all.
Secondly, this is massive fanservice/fanfic Luke where he solo's an entire super elite squad of Dark Troopers without a single sweat while we have seen other characters struggle to even make a dent. It's everything boring Star Wars fans demanded Luke in TLJ should've been and it's just bereft of any tension. At least have the main characters of the show doing something instead of going 'OH LOOK HOW COOL LUKE IS WOOHOO!'
Thirdly, it's just boring. I guess I should be happy that they didn't tie in yet another animated show character, but Luke likely isn't going to factor into the further show at all and we already know where he ends up vs. using someone like Ezra who they would be free to reuse in the show and have him do whatever they want to. They can't really do that with Luke, because canonically he will start his Jedi Temple not very long after this episode is taking place. So, Luke being the one to take Grogu basically leaves two options: 1. Grogu is done in the show and died in the Jedi Temple burning. or 2. the next time we see Grogu he will be somehow separated from Luke anyway and Luke taking him was utterly meaningless except that maybe Grogu will have a couple of extra Force powers.