So many actors? Boyega said he won't do it. Not because of the fans, but because of how Disney treated him and his character. Isaacs wasn't all that happy with Disney either and the way the movies played out. And Tran still continues to voice the character. And someone earlier said Daisy was willing to reprise her character.
I guess you weren't paying attention when into darkness came out. How about the backlash for the final season of game of thrones? And I will disagree with your crystal skull statement as well. Indiana Jones is not nearly as relevant as star wars. But that movie still gets pounded on by the fans. Have you seen what's going on with Lord of the rings? When you don't respect what made a franchise what it is, fans won't be happy. That doesn't mean they don't want new things. There is a right and wrong way to do fan service.
Again, I'm not saying all fans are saints. But the fans just aren't the reason star wars is where it is. You said fans are why mando became a rabbit hole of cameos replacing storytelling. I'm not sure if you have watched cobra kai, but that is a rabbit hole of cameos as well. But it's universally loved by the fans, just like most fans love mando. Heck, season one of mando was loaded with tons of OT call backs and characters. Why? Because Jon an Dave are huge fans. There is gatekeeping in EVERY franchise. Is that bad? It can be. Most fans just want good star wars. I ask you this. If doing things that the fans want to see or expect is so bad. Why buy the franchise with the largest pop culture base of any franchise? Just make your own sci-fi universe.