Oh, I don't mean his science or anything (I don't even remember what his field is and I am refusing to look it up on principle) just the stance about how there are things we should be focusing on that we can do now with fairly little effort and improve lives, like fresh water, expanding electricity into Africa, using already existing technologies to reduce pollution as China and India grow, denting AIDS rates in Africa etc. rather than chasing schemes that even some climate crisis people admit wouldn't do much of anything.
That's the last of him I've ever heard about, though he's not the only one to take that stance (there were some similar arguments in the 1970s against the anti-nuclear movement) he was one of the first as stuff like TED Talks (I'm using this as an example, do not take as endorsement of TED) took off who was arguing that a lot of discussion focuses on things we can't really do anything impactful on when we have stuff like golden rice that can easily do a lot for people now. But that the main problem is those things don't fire up people in the West anywhere near as much, especially when there isn't money in it.
Plus he looks like Gordon Ramsey. And dresses like him too.