Not to get too far into the weeds, but Disney does more logistically in a day, than most smaller parks have in a year, the different parks anniversaries at least in my mind are like comparing hosting a backyard BBQ, to a wedding. The size of Disney not to mention the expectations of their guests is just a straight nightmare, i do agree that the 50th is lackluster, however I refuse to believe it is even close to the level Disney had originally planned.
Disney is still facing logistical problems, but because people have moved on from the pandemic, they expect things to just swing completely back to where they were pre pandemic, and that is not a possibility right now. the best example i have is the dining plan, Disney would clearly like to offer that cash cow to their guests, but their hands are tide at the moment due primarily to staffing constraints