The premise is exaggerated, and I'm not sure I buy that silicon valley is that influential, prepared or even reckless. However, the president in it is not nearly as out there as the real one she's based on, and the scene near near the end where someone looks up and the mob turns on her was damn near immersion-breaking.

In real life, they would have at best dissipated and tried to pretend they were never there, or at worst beat up the guy that saw it because it's a trick and he must be in on it. Mobs are not capable of humility of any kind, and cease to exist the moment it's forced on them; that's like mob psychology 101.