Ok some context here.
Touring Plans noticed data submitted by their users that Disney’s reported wait times were fluctuating erratically and in impossible ways.
So TP paid someone to stand in line at Animal Kingdom rides to measure the actual wait times vs posted.
Animal Kingdom's 2019 Wait Times Are More Wrong Than Usual - TouringPlans.com Blog
What they found was the rides were being exaggerated at historical levels. All Disney rides have some error or buffer room built in, but this was way more than normal.