I also agree that it is fantastic that these discussion happen for the sake of making founders think about things like engineer burn out. Thank you for writing your post and furthering the discussion.
When we talk about the work environment at Mahalo we often throw around the 80 hours a week because there are weeks like that and people need to be ready for it. Those statements seem to get focused on. Jason has also publicly stated several times that it isn't 80 hours EVERY week and that there is great culture at Mahalo. Those statements don't tend to get talked about because there isn't much to argue about there.
Final thing, is that I was very careful in my post to never so that great results ONLY can be achieved by great sacrifice. There is clearly evidence that is not the always the case. I tried to be very careful in wording things to just point out that generally, the amount of success is usually tied closely to the amount of commitment.
Thanks, again for your feedback.