Crazy to think now that between 1980 and 1995 WDW only had 2 roller coasters.
And not for a lack of trying (Matterhorn, Mt Fuji etc)
With 4 new coasters opened between 2014 and 2023, and Monsters Inc on the way, I don't think Villains necessarily has to have a coaster, but it's the easy choice and an obvious attempt to get Beastly Kingdom's dragon coaster finally built.
But WDI is certainly capable of making other kinds of thrills rides with better immersion.
ToT, IJA, RSR, Star Tours, Splash Mountain, they can when they think outside of the coaster box.