I don't understand why is it a "discrimination". Yes, even 50 hour week severely limits family time; so what? Just do not apply then, especially since they are totally upfront about the desired working hours. It is not as if you do not have choice - you are already employed, and if you were to switch jobs - there are plenty of places available with sustainable work-life balance. Some people are willing to put in actual effort and time in the work (and get compensated for it accordingly); removing the 70+ hour week part of the job would be the very same "discrimination" against them.