Also external parses (like FFXIV-APP) distrupt the gameplay of other players, creating heavy unplayable lag to others except the parser user.
......

I re-read this so many times and tried to make sense of this.... and it failed. Really. Please explain how that was even possible?

It doesn't even send a packet to the game. Parsers work by analyzing the game memory through the log data which are handled locally. No connections are made, whatsoever, to FFXIV, let alone to other players, that.. somehow lags them.

also...

Every single mmo out in the market is perfectly able to detect external programs, banning the abusers. This is by far the only mmo where everyone do any kind of crime.
I've yet to ran into an MMORPG that could do this.