I currently work in a unicorn which recently IPOed and can confirm that I have the same experience as the author of this article.

I also had a very similiar experience at my previous employer which was also a valley based company which IPOed.

I have multiple colleagues who are in the same boat, both current and former, and while I realize this data is anecdotal, from my perspective, work culture in the valley is just plain broken.

People are not robots, they need time to rest and adjust.