Even at a park like Magic Kingdom that has substantially more to do than Epic, the average length of stay is like 7-8 hours. The ticketing structure of one day at Epic causes everyone to show up at rope drop then there’s no afternoon arrivals, so it’s essentially heavy load in the morning that burns off well before close.
It’s a bit of an oxy moron, but it seems like the park is at a point where the rides are good but the overall experience is mid.