I'm note sure if I have completely misunderstood your comment, but are you saying that scientists exist "just to poison the well for the benefit of the billionaire class"???
https://www.theguardian.com/us-news/2019/aug/18/private-jets...
I will not discuss his capabilities as a scientist since I'm not qualified to speak on hard physics at all - but this relationship between these people has me very skeptical of their truest intentions.
But you're right that Stephen Hawking and Neil deGrasse Tyson were not in the same class as Richard Dawkins or Lawrence Krauss in particular. I'd include Sam Harris in this group too.