A counterpoint, if you will allow a couple of quick anecdotal experiences. While at one of the area theme parks a few weeks ago, I noticed there was a "differently abled" employee cleaning tables. Every time a group would get up from their table, her eyes would light up and she would excitedly say goodbye and wave and smile to the departing party before cleaning their table. It was clear that this gave her great joy.
While on a DCL cruise a year or so ago, there was a girl who wore with great pride a shirt that listed all of the cruises she had been on; I saw her in line for almost every single character meet-and-greet, and occasionally she would bring a sign which documented a certain number of months since her last severe health issue. It was not what you or I would consider a long time since that most recent health issue. Despite that, there was a sense of happiness and contentment in her aura, as if this was a needed escape from some of the bleaker realities.
In both of those cases, the parks and cruise give them something tangible, something real, an opportunity to just be happy and perhaps escape some of the bleaker realities they face, and then you wonder what happens to that when they instead spend a year or more without that. I think that's true to some extent for all of us, and why humans treasure their vacations so much. A study came out showing that 1 in 4 Americans now suffer from "mild" depression, and the amount suffering from "severe" depression has risen by 7x, post-COVID. None of this is to try to compare it to people dying or becoming seriously sick, or even to say "parks open now!", just that there's a little more depth to it than whether people get to ride Splash Mountain or not.