Yes. They have a choice, they are privileged enough to be able to choose where they work. If they choose to prefer more money over not making more teens depressed. (If that's a thing, I have no idea), then they are responsible.

Generally, most of us in software can choose where to work. If we don't make this choice according to morals (whatever they may be) then we are less moral than ppl who don't have a choice, and those who have a choice and do consider it.

Is that a bad thing? Depending on which morality you subscribe to I guess....