I would imagine its a lack of knowledge, even in the 70's elton had lost a huge amount of hair, add to this the huge mop wig he used to wear its baffling that people assume its a HT. Maybe because HT's have progressed so well that no-one considers the possiblility of people wearing wigs thesedays, but common sense will indicate that its a wig...I guess people simply dont either care or are too lazy to do a little research.