Every big website you use performs psychological experiments on millions of users without explicit consent. That's basic A/B testing. The difference here is tha

Every big website you use performs psychological experiments on millions of users without explicit consent. That's basic A/B testing. The difference here is that instead of A/B testing to see whether they can get you to click a button more, they tested to see how their platform, which has dramatically altered how people live and socialize, alters users emotional states. It's off-putting because people enjoy the illusion of unmolested free will, and don't understand the degree to which they're already being experimented on. That being said, the social and emotional health implications are too huge to leave things like this unresearched.