All-star benefit concerts relics of the past?

From this article:

The last major benefit concert, Live Earth, couldn't escape bad publicity either. The event was a series of global concerts designed to raise awareness of global warming. But the concerts gained plenty of attention for back-stage drama.

Critics said the logistics and private jet travel required to stage the concerts damaged the environment more than helping it. One dubbed the concerts "Private Jets for Climate Change." Others accused organizer Nobel Peace Prize winner Al Gore of staging the event as a promotional vehicle for a planned presidential run. The event's worldwide television ratings tanked.

Benefit concerts are now rich subjects for parody. Two animated shows, "South Park" and "The Simpsons," have skewered them.