Since we're only discussing the merits of rides at the three specific parks that I mentioned- only one them has ever had 10 rides and it may have gotten to 11 for a short amount of time if you factor in the seasonal nature of Horizons and Wonders of Life, or unless you want to count the Friendships as a ride (I think they got to 10 for a period, but maybe not). It's been 10 or 9 for the majority of EPCOT's entire history, even during the EPCOT Center golden age. Studios may eventually get over 10 at some point in the distant future, but with GMR being replaced, the odds of that happening any time soon are next to nill unless they decide to toss another carny ride into Toy Story Land. Animal Kingdom will have 9 rides when Pandora opens, but I'm hoping that a tenth ride never shows up until they bulldoze 2 or 3 of the Dinoland attractions which would keep them from reaching 10.
So if you're saying that 3 of WDW's parks have existed in an embarrassing state for the vast, vast, vast majority of their history, you (and some other people here) should probably take your money elsewhere where there are more rides offered.
I dont think thats what you were implying but it's still a fact that the 3 minor gates have mostly had less than 10 rides for all of their history.
EPCOT Center was rounded out by shows and such, but let's focus on the rides in particular.
I'm going to do something that pains me as a true Disney's Animal Kingdom fan, but makes a profound point. By my count Disney's Animal Kingdom currently has the equivalent of just under 50 minutes of ride time (according to Wikipedia, so there could be variance). The vast majority of that is derived from two rides. One among the best Disney rides in the world, one a middle of the road ride.
Let's compare that to an admitted outlier attraction at EPCOT Center. The then cutting edge Energy Pavillion. On that one ride alone, you could enter a ride/presentation lasting
45 minutes. One ride consumed nearly as much time as an entire park's roster of rides!
Losing attractions like Horizons, World of Motion, Imagination, and Body Wars have slammed total ride time. In total, even with Soarin', EPCOT Center/Epcot has apparently lost more than 25 minutes of ride time by my count.
This slide is only going to continue.
When Energy finally is shuttered for a new Roller Coaster, we could be looking at more than 40 minutes more ride time gone.
Even with rumored additions, Epcot will never again reach the amount of time people could spend on rides.
Amazingly, even with more than 1 Billion spent, DHS will be in the same boat. The loss of Tram and GMR ride should evaporate any gains from Star Wars or Toy Story (unless Alcatraz has something up its sleeve).
Modern theme parks. Ride less. Shop more.
Oh, and you're going to need FastPass+!