Can you imagine Ethel Merman's reaction if she were to be referred to as a diva? I can hear her spouting the "F" word as she turns over in her grave
The start of the use of the word diva in recent years coincides exactly with the absence of excitement and presence generated by Broadway performers of yesteryear. Think Merman, Martin, Lawrence, Verdon, etc. None of them were ever referred to as divas.