So hang on... It's traditionally poisonous to faeries in folk tales, it heralds the death of stars because it's non-fissionable, and it also rapidly created a society that could end the world in a single day?
I don't know about the actual dude, but he is often cited next to reactionary takes--like how there isn't enough food for all of us [so we should let the poor die], general pearl clutching over high birthrates [in the wrong ethnic groups], and just generally very selectively utilitarian ways of viewing [certain kinds of] people.
That said, after clicking around some more on OP's link, I'm not really sure what the author is about at all.