As a thought experiment, they probably helped the world global happiness more by burning $100B rather than just sitting on a massive cash hoard as so many tech companies enjoy doing. Sitting in their coffers it was doing nothing. At least this way, it went to a whole bunch of individuals, manufacturing startups, etc. And theoretically many of those recipients spent some of it.
I'm not saying it wasn't wasted spend, but velocity of money is a thing and maybe it's better off in the hands of the people who it was spent on instead of sitting in Zuck's war chest.
Can I just remind people what Facebook the company is responsible for? And I'm not talking about Myanmar and so on and so forth and I'm not talking about them as a VR entity. People miss posts all the time because the algorithm won't show it to them, even from close friends. People had accumulated "Other" inbox messages for years, that they were never told about. And so on. "Helping the world global happiness" was never a priority
I wouldn’t call what Meta is providing to the world “happiness”. Addiction is a lot more apt.