Really
REALLY bad idea - this is one of law enforcement's larger pet gadgets and companies, so the GP would not only have a particularly enthusiastic mob coming after them, said mob's pitchforks would have automatic cannon launchers and EMPs and push-button-activated nunchucks and all kinds of other crazy things that aren't legal for standard-issue pitchforks.
So if the database is fingerprintable to the GP specifically in any way, they're very very dead. And the random username doesn't even count here; they probably didn't post from Tor, so their real IP is connected to this post.