It is a known fact that your dragon can get parasites from crickets (not all of them) if kept properly there is less of a chance then if they are kept in other dead crickets, eating fellow crickets etc.. worms however have had little to no known cases of casing parasite infestation in bearded dragons.
If someone knows of any please point them out. I haven't ever heard of any feeder worms carrying parasites that transfer to bearded dragons.
If you decide to staple feed BSF larvae, there should be a change in calcium supplementation. As these feeders are high in calcium themselves and require less supplementation. If feeding these as a staple you can dust with calcium 1-3 times a week depending on the dragons intake. Over supplementation of calcium can result in calcium deposits on the dragons bones.