I think it's two separate factors, actually. Yeah, audiences "maturing" and expecting more is part of it. But you also have quality that has dipped, which makes the gap even wider.
This show, so far, has its good and its bad. As far a look and feel, Star Wars has never looked better. The look and feel of the base where most of this story took place were INCREDIBLE! It was a new place. There were lots of things we have never seen. And yet, it felt so comfortably Star Wars. And it looked really slick. And thank goodness for that because it is almost, ALMOST enough to distract me enough from the bad storytelling enough to allow me to enjoy the show as a whole. And that's kind of where I am so far. I am "almost enjoying it," and it's a shame that I have to qualify it with "almost" because that's really only there because of issues that
distract from what could be a really cool show.
Here's one of my biggest issues: I haven't seen anyone else really discuss this, so maybe it's only me. Or maybe I just missed others talking about it. But the idea of the Inquisitors in general is a huge problem. In the abstract, it's a really cool idea. But the problem is, it creates problems with a blunder Lucas made in the story of A New Hope. The problem is that you now have a formal program to scour the galaxy to hunt down and kill every last jedi that survived Order 66 at all costs, and you have Obi Wan Kenobi being the most hated of ALL the jedi. Despite being conveniently inept whenever the plot calls for it, they have a good spy and intelligence network and are decent at actually rooting out the jedi. But with that as the relatively recently established backdrop for what is going on throughout the empire during the period between episodes III and IV, you have the most notorious jedi of all hiding out on Vader's home world under the name "Ben
Kenobi." And the spy and intelligence network somehow never picks this up. Ever.
And Lucas made the problem worse in the prequels by making Vader
from Tatooine in the first place. He obviously tried to deal with that by trying to give us reasons why Vader would never return there. But he didn't hit that hard enough to make it believable. It would have been better if, as portrayed in ep. IV, Tatooine was such a backwater place that it wasn't even on the empire's radar. But having so many significant things happen there to put it squarely
on the empire's radar really makes then never discovering Kenobi such a huge stretch.
This show has some really good ideas. The inquisitors in general are a really cool idea. And the conflict between the jedi code and Obi Wan having to maintain his cover and be anonymous
should be pretty compelling. But instead, to me, it just highlights the problem I mention above. Hence just being only able to "almost" enjoy it.