Charismatic is pretty subjective, since the predator being fed here is a spider. Even though both spiders and puppies are (or were, in the puppy’s case) predators, I don’t really see how this is is significantly different from keeping any other spider as a pet and feeding it crickets.
I don’t think any research implications are necessary to promote that. That’s just good sense.
But maybe feeding an animal with another animal it was evolved to eat should not be problematic, independent of how sensitive to pain the prey animal might be. (An example that is problematic is human beings who boil lobsters alive—or boiling anything alive, really.)
(It just now occurs me to wonder how fried crickets are made for human consumption.)
