What's so special about her?

Those artists couldn't exist now as they did then. They couldn't have the same success.

The "legendary bands" you refer to produced music in a time when popular music in the west was in a state of development. People in the 60's and 70's did not have many options available to them. Everyone mostly huddled around a radio and listened to what was played to them by record labels. People's tastes were homogenised in a way that they simply aren't now. This gave promoted bands major cultural capital, power and lasting resonance in a way that is impossible now.

If you wanted to get into music exploration yourself, you had to have money and connections and a local record store to do so. That's all gone now. The internet blew the gates wide open and allowed for counter-culture (in music) to take a major seat at the table. This led to an explosion of music variety as geography became no boundary and bands and projects, no matter where they were could just share their music anywhere.

What chance would you have given an Estonian Shoegaze band in the 1980's? Or a Filipino Post-Hardcore project then? The concept of an era being defined by a dozen "legendary" (and apparently exclusively rock artists ) bands is simply antiquated and regressive. People are far more eclectic and varied in their listening interests now, and what we have is a much larger pool of respected artists and bands within a large pool of subcultures and subgenres.