The problem is these filters simply do not work.
Right now I see two issues, the first is obvious.
This test filter is not taking into consideration exclusivity or spacing in titular sentences...
Ahem, in english...
words like that followed by it become tit for this language filter... meaning it sees a bad word... well, not a 'bad' word, but a word that the majority of society find inappropriate.
Ahem... The second problem with this filter is, it simply will not prevent bad people from being bad people.
If I wanted to say, you are a horrible person, you simply are worthless and not really good enough to play this game...
... did I use a single bad word? is worthless a bad word? No... but my intent was clear, I was making a person, the target of my verbal attack feel low... and I did it without using a single inappropriate word.
Filters only hurt players, they do not help anything, at all.
The community on this game, at least, the server I am on, is pretty tame and civil, I can understand how other servers might get more trolls or such, but the only true answer to that is increased Moderator interaction
If the number of servers was reduced by a little, or merged with others, then Mods could be around more often to see any misbehavior or receive reports quicker.
Well, I do hope the filter is fixed, so it can recognize 'SPACING' at least, as that quirk is quite unfortunate and interferes with a lot of normal sentences....