Yes, but only because they have a ton of overlap with the much broader group of "people who will get shot in the hole they just dug for shortsightedly causing exactly the kind of societal instability that resulted in them getting shot in the hole they just dug."
Humans can survive and thrive in very extreme climates. We can grow enough food for everybody. What we can't do is figure out ways for both of those things to happen without preventing people's standard of living from going so far backwards they get shooty.
Humans can survive and thrive in very extreme climates. We can grow enough food for everybody. What we can't do is figure out ways for both of those things to happen without preventing people's standard of living from going so far backwards they get shooty.