Idk, I actually like My Crazy Obsession, it's fun to see what other people collect. It's only episodes like the adult baby and love doll one that make me side-eye it in how they don't really fit with the rest of them. But, since pony collecting isn't something like that, unless you get certain unsavory types involved, I don't think an episode featuring them would automatically be a bad thing.
Besides, I'm an adult who collects toys, I kinda don't care what people think of that and even if it was somehow portrayed by a show in a bad light, it wouldn't change anything to me.