Is it still a facepalm given the rest of the sentence? "So, s-risks are roughly as severe as factory farming, but with an even larger scope." The word "severe" is being used in a technical sense (discussed a few paragraphs earlier) to mean something like "per individual badness" without considering scope.
Facepalm was a severe understatement, this quote is a direct ticket to the loony bin. I recommend poking your head out of the bubble once in a while -- it's a whole world out there. For example, some horrible terrible no-good people -- like me -- consider factory farming to be an efficient way of producing a lot of food at reasonable cost.
This sentence reads approximately as "Literal genocide (e.g. Rwanda) is roughly as severe as using a masculine pronoun with respect to a nonspecific person, but with an even larger scope".
The steeliest steelman that I can come up with is that you're utterly out of touch with the Normies.