not everyone in the states is 996, but yeah, there's a pandemic of bad management here. or rather... not so much bad management... but management by people who read articles about how Amazon, a company with tens of thousands of engineers, manages projects and then decides they're going to manage their startup of 4 people the same way because they think it's a "growth hacking" hack.
just keep in mind that American tech startups are often just vehicles to evade estate tax. and certainly vehicles for converting VC money into more VC money by selling dreams to greater fools. there's also a down side.