To say that we don't care what goes where, is shallow.
It does not matter how the IP fits in relevancy to now, as all it needs is for the attraction to be something that can be timeless regardless of whether or not you've seen the material before-hand. It's the reason to why Splash Mountain (which was using animated characters used in a controversial film) and Waterworld (an attraction developed alongside one of the biggest failures in the 90's box office history) work so well, because you don't need to see what they're based on to understand the value that they both offer.
Now, if Pets isn't great and follows the traps that Supercharged does, then sure, I'll eat crow. But with this seemingly from the Hollywood UC team (the same group responsible for JW Hollywood), I'm not inclined to easily believe it will be a failure.
And even then, as
@Stryker points out; there is legitimately no telling to what people will like in 5 years. Five years from now doesn't seem like a long time, but it genuinely is for how people perceive things. And if the ride is going to be a hit, then it does not matter what the source material is. Especially as UC had planned something unique with Pets, since it began it's development as an attraction.