You seem to take this as a given, but a lot of people disagree. As far as I can tell the only abuse is that people who were rude already would start being rude with numbers. I can see how parsers might exacerbate pre-existing douchebaggery, but it's not gonna create new problems. It's not like we have to get abstract or hypothetical either; parsers are far from unknown territory. Plenty of other games have them and they work fine (and don't tear the community apart).
Do you have anything besides anecdotes to support their abuse potential?