The first point is the player is making free trial accounts, meaning it's impossible to ban them without IP banning (which a vpn would just bypass anyways) or blacklisting as they can just make more accounts with more alts.
The second point is saying an entire server should just not use the novice chat because of one guy is insane. That's not even considering the fact it's a NOVICE NETWORK, where new players are, and if new players are seeing that behavior repeatedly without anything being done to properly stop it by Square, chances are they're going to go somewhere else, because they've gotten their first impression.
You know. This is just casual "We don't actually care just don't swear lol" that I always felt was happening in the background.