I genuinely don't understand the criticism. You don't find or enjoy working 70-90 hours healthy? That's your view and you likely shouldn't apply for this position. Even assuming this is crazy, what's wrong with crazy people recruiting similarly minded crazy people? It's most obviously not a fit for anyone who wants to work 40 hours or wants to see their kids or whatever, but for those, there are plenty of other jobs.…
Fair thing is, they are honest about it. Pathetic is, this is upfront expectation for business to perform.
Personally, I believe that if one decides to waste its life on work, however pathetic life choice that is, one should be allowed. Rest of us can point a finger, laugh and get back to living our lives. This ain't something to glorify or to be proud of, quite opposite.
One last thing - most people think along these lines, based on reactions here & his FB.