Average IQ might not matter that much when space travel is the realm of unusually high & autistic intelligence anyway. I could see a kind of dual caste forming in the west as the elite and intelligent get more insulated from the general hellhole population.
It's a long shot, but maybe enough of them could get to mars to be the seed of a new society - and probably eventually a new human subspecies since it could be a long time before earthlings can make contact again.
Another possibility is that the west's intelligent citizens will bail to somewhere like Russia, get into government etc, and then focus on escaping to mars before that nation is eaten by wokeism too.
It definitely seems like wokeism is a more serious "great filter" than war, or whatever else people assumed it was in the past. War accelerates innovation and the most significant jump in space exploration we've ever had was a dick measuring contest between two nations.
Meanwhile wokeism rots out the entity from the inside, causing the total cessation of all functionality. It could be a kind of biological limitation, that a species that reaches our stage will eat itself and get kicked back into a dark age.
Women contour to the dominant dogma. They are more religious on average (church attendance is very skewed), when they first got the vote in the UK it lead to more conservative MPs because they were slightly more conservative than men, as that was the prime dogma.
Wokeism is anti-darwinian, its carriers are less likely to pass on their genes, or if they do then they end up castrating their children. Obviously some wokers do breed successfully, but on average a conservative and traditionally religious woman is much more likely to spawn a family that's both large and stable, not to mention mentally healthy. In a SHTF scenario it's these kinds of families that will be best off.
My point: wokeism is genetic suicide. By nature it will destroy itself and those who are resistant to it will inherit the earth. The question is how deep we'll be into the new dark age by then and how much (if any) worthwhile civilization is left.
Open borders aren't remotely as big a problem when they're not paired with handouts.