But when a community has set a precedent and an expectation for trust and respectful discussion, it is poisoning and degrading that community to come in and disrupt it intentionally for your own amusement. If you dump toxic waste into a pool, you've poisoned the pool, accusing the fish of just not liking it doesn't work.
He appears to be arguing that it's bad even when the community doesn't have that precedent/expectation, though (my examples were of communities where various varieties of "trolling" are expected/normal, like SA's FYAD, and 4chan's /b/). Plus, ecosystems are complex; Slashdot's is a bit of a mix. You can't napalm the "intruders" and accuse everyone burnt by napalm of just not liking it!
