I've never had one, but before I decided on a BP for my first reptile I was almost dead set on a crested so I've done quite a bit of research haha. There's lots of differing opinions online but what I've seen most often is people saying that they don't necessarily need insects if given the proper diet, though insects can be a nice treat. I believe either pangea or repashi (possibly both, I don't quite remember) even makes a powdered diet that includes insects!
If I've gotten anything wrong please correct me, like I said I have never actually owned one and there are a LOT of conflicting opinions out there (as there is with pretty much all animals), this is just what I've read![]()