Is it because don’t know if it’s because I’m younger and didn’t grow up with the originals or even really the prequels but I really don’t mind the new films at all. I wasn’t ingrained with Star Wars from birth either as my parents weren’t fans. I feel the older Star Wars fans seem to be the ones upset and the younger ones not so much.
I don't see much of an age issue, per se. My daughter is 13, and whilst she isn't upset about it (I am), she also is not as interested in Star Wars as she used to be. She is more like..."meh, it is Star Wars". Now, that could be because she's 13 and exploring other media...but, she's been a Star Wars geek since she was a kid. Heck, she's got a Minnie Mouse dressed as Leia painting on her wall still. She got me into Clone Wars and later Rebels. In fact, when we were at WDW, she wanted to watch the Rebels premier in our Hotel over going to a park that day. And, she wanted to watch the Rebels finale with me. So, no, I don't think it's fatigue.
Rather, I think it's the movie franchise, currently, just isn't turning out good stories or compelling characters.
That said, the thread I do see overlapping from vocal supporters and vocal critics, isn't really age. It's those who were, to some degree, invested in the EU (which I loosely lump Clone Wars and Rebels into, because they are products germinated of that era, though I'm glad Disney didn't eject them) vs the new Canon.
Some of the best defenders of TFA and TLJ, often have a common theme. "Well, if you read this new book/comic, it makes more sense".
And, I'm ok with that. I buy that. But, I don't allow it to excuse poor execution. And, by that, I mean the movie itself should make you want to read those materials, because you want more. A subjective example...I skipped Ragnarok and Black Panther. But, after watching Avengers, I immediately bought both on iTunes (well, I had to wait a week before I could buy Black Panther). And, both those films, whilst not perfect, were fun and enjoyable. I liked the people in the movie. I liked the story. I was able to turn off my brain and explore the world they presented through this story. They worked. And, that's because Avengers...worked. It made me want more from that Universe.
TLJ, in contract, and as a specific example, introduces Holdo. There is no reason to like her. She is arrogant, dismissive, and overall unpleasant. Now, that can be explained away (I've heard it is in the Leia novel)...and, maybe...like Clone Wars gave the prequels more depth, this works. I don't know. But, based on how terrible the execution was in TLJ, I have no interest in finding out. So, yeah, the book may flesh out her character a bit, but...the movie didn't make me want to buy the book. I don't want more.
Further, and this is underlying of a lot of TLJ criticism, I think...I understand that a lot of younger people grew up in broken households, and the like. But, I find this push to debase strong male characters disturbing. And, I'm not reading into this. It is explicit...Kathleen herself said she "couldn't relate to Luke"...not because he was a bad character, but because he was a man...and that's fine for her to feel that way. But, lots of people disagree, and DID relate to Luke.
So, yeah, I'm gonna be "that guy"...what they did to Han's character (turning him into a deadbeat dad) and Luke's character (turning him into a self-hating coward...which if he wanted to isolate, why did he leave a Map in R2 for people to follow?...makes no sense). And, no, phoning it in through force projection at the last minute...wasn't enough of a redeeming arc.
These two actions, one by JJ, the other by Rian, (and both approved by Darth Kennedy) directly spit on the development and the underlying motivations of these characters from the first trilogy. No, you don't get to say "Han just up and left his wife and his kid because...reasons", and then kill him off.
You don't get to say that Luke "had a moment of weakness" and tried to kill his own nephew...especially when then you go off and kill, with no explanation, the external source of that weakness (Snoke).
"Oh, well, if you read this book/comic, it makes sense". Yeah, well...no.
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Edited to say, I'm not really directing this at you personally. Please don't misread it and take it that way. I agree and respect your opinion on the matter...just carrying the conversation along. I'm not sure it's about "age" alone...