This is starting to remind me of Jeff Foxworthy's (tired) bit. "If you're obsessed over whether or not people are nerds and are nerdily quoting their nerdy quotes, you...might...be a nerd."
I mean...is people using "Japlish" really that evil? Just let 'em do it, really, and shrug it off if you don't like it. Pointing it out repeatedly over how "extremely nerdy and how they would be stoned in Japan for such nerdiness," just makes you come off as elitist.