You are commenting on a forum full of people who build tools and technology for facebook and google and probably palintir and a thousand other facial recognition and thoughtcrime style systems.
A lot of what they look for is consistency in accounts of previous behaviors between you and any references / interviews they undertake, trying to assess if you're currently honest.
Another big thing they are trying to decide is if you are blackmailable.
(throwaway because I have the sort of clearance you are not supposed to advertise that you have)
(clearly decades ago, and he's less than reliable, but fun nonetheless!)
It's a problem if you do drugs and are hiding it from someone (say, family). Then you can be blackmailed.
Facebook and Google need the user to use their services and they say (despite the message being in legalese) what they're going to track. There is consent involved in these organisations, it's a voluntary transaction.
The government can (and did) just intrude on everything without consent or penalties.
From a moral point of view, I would be open to work for BigTech, but I wouldn't work for a state actor.
And, also, both Google and Facebook eagerly cooperate with state actors in censorship and other aspects - likely surveillance too. So there's not much difference in that aspect whether you work for the government directly or for somebody who takes marching orders from the government while being formally independent.