This is an interesting thing to think about. If the post covid travel bubble lasts till about early summer 2022, Disney will have to have a way to get people interested enough to come to their extended 50th celebration. The "steam"might be running low by late summer 2022.
People can only go on so many vacations, so often. It's definitely possible that a huge 2021 travel boom leads to a big 2022 travel bust. Especially with rising inflation, gas prices, and any potential economic downturn we might experience.