I don't know if this is a troll post or not, but I'm former XOM now working in FANG, and if you think you're going to suddenly be free of politics, "unfair" promotions, or stress, well LOL good luck. The average amazon employee is chewed up and spit out in 5 reports) you're immediately put into a pivot which is their version of PIP, which is essentially a 3 month warning that your time is up.
All in all this can be a great move financially (esp if you make it past your initial stock grant and start getting stock refreshes), but some of the things you didn't like about XOM will still be there, just in a less forgiving environment.