Do you ever think a species can devolve? Sort of like auto-protection against natural feeling of ease of life (perhaps as overpopulation protection)?
When a species calls for sacrifice, lowers standards of what it accepts either physically or mentally and seeks to pawn off responsibility off themselves so they deprive themselves of skills or the need to use skilled problem solving are they not devolving?
When you look at what Liberalism is, it is calling for sacrifice in the green movement, lowering standards in education, and strength for that matter, and seeking to push responsibility away from the individual, how can one not believe the 2 are tied together?
Perhaps Liberalism is a defence against overpopulation, but it's unneeded because it would be dangerous for humans to fall out of being the highest creature and population numbers are not going to all of a sudden fall from overhunting or overgathering of food, because of farming and human knowhow.