I agree with you, I think the whole prejudice against tounges goes back to the days where unfort icontrol associated with a Heresy. Its highly suspected that the Monatist spoke in tounges. After St Augustine was successful in fighting t that heresy(tounges really wasnt the issue) I am convinced that tounges fell out of favor for centuires as a general practice of the laity. So it was found after the Apostolic age and didnt die out.
And what tongue, exactly, are you speaking? :-)