I've never left Disney more than 2 hours before our many flights in the past 8 years (since we got PreCheck), including when we've left during Orlando rush hour.
We always check a bag.
Most of the time I have to stop to change clothes since I rarely like to fly in our park clothes (too cold on airplanes)
We've always been at our gate with at least an hour to spare.
Some of these trips have been in Ride Share, some in our rental car.
We depart Disney at the same time no matter how we get there.
I feel 100% confident in that time frame