Trolling that isn’t being replied to is simply called spam. Unfed trolls aren’t trolls by definition. That leaves open the question whether a policy of not feeding trolls reduces the the total volume of trolling + spam aiming to troll. The answer seems likely to be yes, but might depend on how rigorously the policy is followed (I can imagine unsuccessful admonitions not to feed them encouraging trolls).
Trolling that isn’t being replied to is simply called spam. Unfed trolls aren’t trolls by definition. That leaves open the question whether a policy of not feeding trolls reduces the the total volume of trolling + spam aiming to troll. The answer seems likely to be yes, but might depend on how rigorously the policy is followed (I can imagine unsuccessful admonitions not to feed them encouraging trolls).