This needs to be stressed more often when comparing EPCOT Center to a Magic Kingdom-type experience.
For 20 years Florida's MK had no rides based on cartoon characters from movies/shorts outside of Fantasyland (and the purpose built, "temporary", Birthdayland). The only film based ones at all were the treehouse, canoes and keelboats, none of which were ever sold as major attractions. Like EPCOT's pavilions and their themes, MK's land's were built on experiences that supported the core concept of each area, whether it was the Diamond Horseshoe Saloon, the Island Supply Co. or the Penny Arcade. In that sense, the two parks share more in common than most people realize, despite their superficial differences.
Sticking cartoon characters anywhere in MK in the name of synergy or marketing is no less acceptable than at Epcot. The only reason people don't get as upset is that they've been conditioned since the 90s to think that real "Disney" entertainment comes from the company's movies, and MK is supposed to be "Disney" Land.