I encourage the Lycosidae for the same reason. They are pretty tidy except for the shed skins.
I’ve heard that story about the young having more concentrated venom told about rattlesnakes and copperheads, but my Grandfather told me it was a myth. His explanation was that people who got bitten by baby copperheads were typically bitten many times, because they’d disturbed a nest or fallen into a snake pit. I dunno about baby centipede venom but my uninformed hunch is that it’s also a myth.