Absolutely discredited...however we have folks continuing to pretend this is the case. Why on earth hire these men for 30% or more? Ha....laughable. 
In the meantime men will occupy the most dangerous of professions bolstering 92% fatality rates in the western civilization while the uninformed  ponder this wage gap nonsense. 
Can you imagine the marching in the streets if women were dying at over 90% from work related incidents!
I guess this is what the folks are supposed to write about these days....very fashionable.