Good quality GBS+Tap water= healthy birds. I'm constantly on the lookout for bugs 30% protein or better, cost less 35 cents a pound, and can't vector bad things to my birds....I'm stuck with GBS and tap water.
Just because your bird/birds go crazy over anything, doesn't mean it's good for them. My dog would go crazy over and eat every piece of chocolate in the house, but she would die. Not the same with meal worms, but something to think about.