While I couldn't agree more, I don't think Disney has ever had a ride system that could handle 4,000+ per hour, and certainly not an E Ticket. They seemed to have maxed out around 3,000 an hour in the 1960's, and then crashed towards 1,500 an hour for E Tickets since the 1990's.
But at 2,500 riders per hour the old school Imagineers and park operations guys did their jobs much, much better in the 1960's and 70's than the current crop of MBA execs and Celebrity Imagineers! do in the 21st century.
It's A Small World opened at the World's Fair in '64, and then Disneyland in '66, with an hourly capacity of 2,500+. Carousel of Progress opened at the World's Fair in '64 and Disneyland in '67 with an hourly capacity of 3,000. Pirates opened at Disneyland in 1967 with a capacity of 2,800+ an hour. PeopleMover opened at Disneyland in '67 with an hourly capacity of 2,900. Haunted Mansion opened in '69 with 2,300 per hour, the same as Adventure Thru Inner Space that opened in '67.
Then fast forward to the 21st century when Anaheim alone has triple the attendance of the 1960's and they spent $300 Million on Radiator Springs Racers and it only has a capacity of 1,500 an hour. Frozenstrom will have an hourly capacity of 900 per hour. Both of those rides were, or will be, subject to massive marketing campaigns that will create demand of over 3,000 per hour in very busy theme parks. Children will cry, parents will fume.
The delusional MBA boneheads in TDA/TDO and Celebrity Imagineers! in Glendale who design and approve those things are simply not good at their jobs and clearly have no idea how to run a theme park that respects its customers and employees. That's all there is to it.