Yeah, there's no way GE doesn't help the parks down the road in some way, likely in the near future. Suffice it say, many Disney parks, Studios in particular, have been starved for new content and attractions; I'm not keen on everything they've done in Orlando the past x-number of years, but even I felt it when I visited this year for the first time since 2015, just having more options around made for a nicer experience in some ways. Heck, I think it's a big reason for Pandora's success; just seeing something that big and new, not to mention nicely designed, is going to be a magnet for a lot of folks (I admit, I don't think I really "got" Pandora while I was there a couple of weeks ago, though admittedly besides being on line for FoP for a couple of hours I probably just didn't spend enough time in the land to get a feel for it; it was just ok to me, nothing game changing).
But yes, the issue here is that things have to be looked at in terms of industry and market expectations in these discussions, which is what these films and theme park attractions are being built to appeal to most, sad to say. The industry expectation for Disney acquiring Star Wars was that SW would become a bigger money maker than ever; ergo, the expectation for GE was that it was Disney's answer to Harry Potter across town, and it would be a massive, earth-moving success.
This has not happened, and even as the land undoubtedly becomes successful in a number of ways that'll still reflect poorly for some on the market side of things; they were expecting the moon, but they're not getting something that massive ("that's no moon...").
It's the same thing when discussing how to view the success levels of the new trilogy and other new Star Wars films; obviously from a box office standpoint all of them but Solo have been hits for Disney, arguing otherwise would be daft. But the issue comes from something that was brought up in an article posted before: that the industry/market expectation was that Disney could leverage Star Wars into a property that keeps certain demographics, in this case children and young teens, interested in a Disney property even after they've "aged out" of Toy Story or the princess movies. As of now, that looks a bit murky; obviously there are still kids who love Star Wars, there will be for a very, very long time, but analysis seems to indicate that Disney's not quite grabbing the young audience with their SW output the way they were had hoped they would. This can lead to things being deemed a "failure" despite them making tons of box office dollars: Disney won't sneeze at a Star Wars film making over $1 billion, of course, but they'll still be antsy if it makes that much but doesn't really hook the target demographics they want.
Like I said before, I think some of this can be attributed to Disney kind of forcing a Star Wars peg in a Harry Potter-shaped hole when it comes to the theme parks, or initially trying more of a MCU-shaped hole for the films, when SW's success over time never really fit those types of moulds.