Went to see it today with some friends and their kids and the wife and teenage kid.
Overall everyone liked it, despite only our family having seen the TV series so it confirms that you don't really need to know much about the Mandalorian to appreciate this movie.
That said, despite not having watched the review just above, sure it's pointless. I mean, it doesn't move the Star Wars saga forward at all. It's a single adventure lived by a few people in some corner of the galaxy at some point between two saga movies. Is Raiders of the lost Ark a pointless film because if Indy stayed home instead of chasing the ark the ending would have been the same as soon as the Nazis opened the ark and died?
It feels exactly like the Mandalorian TV series, except it's a longer format and higher budget. I'm pretty sure that's what most people who are going to see it expect, so I'm not really sure what the reviewers expected. It was certainly not going to mention anything about the unspeakable sequels, it wasn't going to move the universe in a new direction, it's just a longer adventure than usual for Mando & Grogu, and with more CGI, most of which probably went into the varied locales, the CGI for the Hutts and Zeb Orellios.
It was entertaining but it doesn't have a message, it doesn't preach about anything, it's just some Star Wars stuff with space ships shooting lasers, some action scenes with blasters and explosions, and stormtroopers and alien creatures getting blown up left and right.
It's a dumb adventure movie just like Mortal Kombat 2 was a dumb fighting video game movie. I liked both.