A pandemic change at Walt Disney World will formally final till not less than 2023
Adding such a reservation system out of the blue would have been a difficult process for Disney. The change should have been announced in good time in order not to affect the holidays already booked, which would have been criticized by some. How reservations with annual passes would work, people who didn't expect any restrictions on visiting the park would have been one thing. However, the pandemic allowed Disney to make that change it probably wanted to make anyway. While most people didn't like it, it was understood why it had to happen, and now that it's there, it's going nowhere.