That is indeed troubling. Keep in mind, though, that lots of great people worked at Theranos - I’ve hired one and she’s the standout on an already very talented team. And of course, I would hire Tyler Schultz without a second thought.
IMO it speaks to the "skills" that big tech want in their HR people. The fact that they did all these things is exactly what they look for in "good" HR people e.g. protect the company at all cost and no mercy for employees.