Of course, in your opinion.Soul was a pretty bad movie.
But you're basing your evaluation of the health of Disney and Pixar based on your opinion as if it were an established fact and not just mere personal opinion.
Soul's Tomatometer is 95%. Its critics rating is 83%. Its audience rating is 81%. Those are all very very good scores.
Your opinion of Soul is yours. And you are, of course, welcome to hold that opinion and to express it. But trying to paint it as part of a larger failure of Disney, and that is why the public is turning away from Disney, is contrafactual since it seems the majority of people think highly of Soul.
Soul has demonstrably improved people's perception of Pixar and Disney.