Meta isn't nowhere near cigarettes manufacturers in terms of damage. Tobacco kills millions every year. Meta may need even more regulation, and you can argue that social medias aren't the greatest invention, but I don't think they are that bad.

There's no mental gymnastics here. I draw the line differently than you, that's all. I'm not a big fan of Meta and their products, I would be happy to work there anyway for the reasons I mentioned. But I wouldn't work for let say Marlboro.

Maybe not in the millions, but Meta is certainly not free from bloodshed. For example, in efforts to promote "engagement," they left the rollout of Facebook in Myanmar dangerously unmoderated, and (at least according to claims by Amnesty International[1]) are at least partially responsible for the genocide of the Rohingya there, which saw the tens of thousands of deaths.

[1]: https://www.amnesty.org/en/documents/asa16/5933/2022/en/