depends on the type of extinction faced. it's impossible to say one way or the other. in an argument like this one it depends solely on who can frame the argument better than the other. if you were able to easily assume who'd survive extinction, we probably wouldn't be facing extinction. and the "stupid people have lots of babies and that's natural selection" argument doesn't really fly regardless. more babies = more chances at survival amirite
i think the problem is that you're using the terminology wrong. natural selection as an insult means something other than the true definition. it's a nerd insult directed at a single person, which holds no real bearing on actual survival