Like many other corporations they made a choice to be extremely conservative in their reactions to the pandemic. Lots of parts of the company(but certainly not all) kept working remotely from home throughout, but access to physical facilities was locked down pretty tight. I know many who have not been allowed in the office building they normally work in since mid March, even to access personal items. What you choose to see as inept, Disney chose to see as an abundance of caution to protect there people from infection, and prevent their facilities from being a conduit for spread of the disease.
We all know they are starting to open things up now and maybe that means, if those teams have been called back, and access to the parks is granted for the work they can get a few weeks of uninterrupted time to optimize the attraction before they reopen. But taking a conservative approach to keeping employees safe does not make them inept.
