Well, I enjoy my Axioms for an hour or two at a time almost everyday. They don't make me run out of the room covering my ears after 10 minutes.
BTW, according to my net searches, I could find only 2 who mention tweeter ringing - you & that ninja dude. If there are more, then they are well buried.
If I can't perceive differences between power cords, speaker wires, cables, amps or a complete & expensive 10-tube change in my tube amp, then it is doubtful that I'll hear ringing. Sorry, but again I'm skeptical...