More like Willy Wonka, Dr. Seuss, Dan Quayle, Sylvester Briddell, Jr., Justin Beaver, etc...
If you want to talk about the greatest scientific mind, it will probably take a long time before John von Neumann is eclipsed. I'm afraid Hawking was famous because of his disease, not because he was the most brilliant scientist. There are many physicists and cosmologists that the public never hears about that are far more important to humanity's progress in understanding the universe than Hawking.
Farraday, Maxwell, Einstein, Schroedinger, Feynman, Gell-Mann....the list goes on and those are only the ones that the press knows about when some scientist mentions them.
Hawking was primarily a science personality for a number of decades.
I would say Hawking was still operating at a very high level in his field. That stuff makes most peoples' eyes glaze over and drool flow from their mouths. It won't play in Peoria...
The left made him a hero for three reasons.....
1. He did not say there was a God
2. disease neutralized his gender threat
3. they think saying his name raises their IQ by 20 points
And this is what made him marketable for "that sort of people". One guy that's managed to lay low is Brian May. He's still contributing original work in astrophysics, though he's known by more for his musical talent.