If Disneyland ever permanently removes/re-themes Pirates or Haunted Mansion, I would be very hard-pressed to find a desire to go.
As others have said, the slow decaying of Disney's standards and overall quality has really been felt in a tremendous way.
My wife and I purchased APs back in 2017 and we loved the ability to go on a whim or stop in for "dinner and Pirates" on a Friday night, but sadly those days are gone.
For me, the most obvious grievance is that Disney continues to prove that they have no interest in preserving their own history. Decisions are made these days based on short-term gain, and making low-hanging "progressive" changes, that they think are going to earn them some points with the social media community.
Modern day Disney is "made for the moment". Meaning, nothing is being done with longevity in mind, because everything now is designed to be fluid and interchangeable. And yes, I'm fully aware Walt changed stuff in his day, but even then, his changes were not based on passing trends and social media whimsy. And he certainly valued original creativity over IP inclusion.
I'm probably paraphrasing others on here, but everything that has come out of the Parks since "The Bobs" took over has felt like it was designed by a paid focus group rather than a team of creative individuals. (I do still believe there is creativity to be found in WDI, but it's been so tamped down by budget cuts that its very hard to even notice.)
There is still beauty and charm to be found at the Parks if you know where to look, but never before have we had to live under a regime where everything, literally everything, feels like its just one bad decision away from being erased forever.