10 hour work days IS outrageous. Maybe it's common in this industry, but that doesn't make it any less wrong.
And considering that most tech jobs are exempt, this is just a way of getting you to work more hours for the same amount of pay.
During the last century, we all agreed that a 40 hour work week was the standard. Let's keep it that way. I don't want founders and VC creeps prying the overton window in their favor.