I think the shift in mentality is not actually wanting "less" or "no" responsibility.
I feel what everyone is discussing is very, very real and the grandest phase of the mind's evolution. As individual souls, we desire the creation of greater internal peace & happiness and focus less on trying to influence external peace.
Craving responsibility is a primal urge we all possess. This "usefulness" enables us to maintain the will to live. Without it, there is no purpose to any of life's struggles.
The newfound desire for many to lessen/eliminate responsibility comes from living life with purpose (aka responsibility).
The conscious decision of how we need this "purpose" to morph for enhancement our internal peace and happiness could be labeled "internal evolution".
It is only natural that the morphing phase always involves re-evaluation of priorities...and it is only natural that, as we come closer to shaking hands with our individual mortality, that this re-evaluation comes with a more defined, self-serving motivation.
Basically, I feel none of us want less responsibility; we simply desire the responsibility to shift from serving others to serving ourselves!