I'm just so tired of this whole issue... good/bad, allowed/prohibited, should/shouldn't... Like, seriously - do the devs supply the means and give permission to make mods of any kind? If yes: great, go ahead. If not: just don't do it. I don't know why it has to be such a freakin' powder keg.
And, y'know, personally I really wouldn't care less if someone uses parsers specifically - when with their own little static group. Outside, they shouldn't even be running, let alone be utilised to mistreat people with. Same thing as going into the totally random DF and expecting everyone in there to know everything of any given fight. It doesn't make sense.
Not everyone plays the same way. Get over it.