I dunno about that, Pole. I mean, we are (most of us) diagnosed with Benign Fasciculation Syndrome, so why should it be a bad sign if some of those fasciculations appear in our tongue as well?
Your last post gave me a moment of great self-doubt -- how can I be certain that what I have in my tongue aren't fasciculations, if what I have in my other muscles has been diagnosed as fasciculations? I'm just not sure if I can tell the difference anymore, since I seem to get all manner of fasciculations, myokemia and myoclonic jerks all over my body.
IMO, if neurologists are giving us clean bills of head despite twitching tongues -- and they could never really be sure if we mean fasciculations or some other sort of twitch when we say 'my tongue twitches' -- often without a tongue EMG, than I really don't think it's so black and white as you suggest, Pole.