Sure, but I wouldn't characterize that as 'being left behind.'
Just 'being delusional.'
And if we agree there, then yes I agree that people are less self-critical and more delusional now than ever before (since we have a much bigger toolkit to manicure our image, both internally and externally).
In the old days you would see your dating pool get depleted and realize you needed to aim lower. Now, in any reasonably large city your dating pool is close enough to infinite that this won't happen.