I mean, I agree, but you can compare anything to DHS to make it look better. It's not exactly the highest standard.
I think that's possibly true now, but:
1) 90% of tickets sold nowadays are park to park tickets. And considering the Hogwarts Express can take up at least an hour of your day, that limits what you can do in one day when park-hopping.
2) Once Ministry of Magic, Secret Life of Pets, T2 replacement, and especially Super Nintendo World open, I'm not sure that will all fit in one day. These hours aren't great now, but I think if they don't change them in a few years it'll be much worse.