It wasn't when we went back in March/April, but I believe that was due in large part to no nighttime shows. Once those return, I fully expect to see the mass of bodies working their way out of the parks and to the bus stops, pickup areas, and parking lots.
best way to avoid it is to have some patience. grab an ice cream cone and sit it out for about 15-20 minutes. you'll be able to walk out of park easily. I do it all the time!