I know extended attraction build times have become common practice at WDW, but 3.25+ years to build an attraction is maddening. I'm counting the time from when UoE's doors are being shuttered(which is probably earlier than they have to be).
Well, 2021 could mean by the time 2021 comes around, so maybe only 3 years instead of 3.25?
Anyhoo, Mission:Space took 3.5 years; Test Track took 3.2 years; Expedition Everest was 2.9 years; and, 7DMT was 2.7 years.