Batman & Robin is a proper film, The Last Jedi is not.
Since the early days of filmmaking, it was discovered that the best films were the ones that made the best narrative use of time, just like in a book. A book can't waste an audience's time with wild goose chases, neither can a film.
Whatever you may think about Batman & Robin, it is a proper film with a proper narrative, for you can't take anything out of the final cut without making it nonsensical. In The Last Jedi, there is only 30 or 40 minutes of actual necessary storyline, which is the big ship chasing the smaller ship and that's it, anything else is just nonsensical wild goose chases that doesn't need to be there. It doesn't even serve an artistic purpose because who wants to see Luke erotically enjoying green milk coming from a creature uglier than lady gaga?? His smirk to Rey must be one of the most repulsive things ever shot. It's shocking.
The dialogue is also so incredibly poor. For instance when the soldier tasted the salt and said "it's salt". Why this dialogue? Hadn't it been already established that it was a salt planet? Or would unexplained red salt be too horrific for the new dogmatic wokie generation? I don't understand it.
You don't see those glaring nonsense on Batman & Robin. Furthermore, Batman & Robin famously ended a franchise and its director is still paying for it, whereas Jedi will hit a billion in sales and Rian Johnson has been awarded a new multibillion dollar trilogy. What is wrong with today's filmgoers? Which are the same ones of 1997.
Oh how the mighty have fallen.