Facebook created products to induce mental illness for the lolz (and bank accounts I guess?) of the lizards behind it[0]
IMHO people like these are the most dangerous to human society, because unlike regular criminals, they find their ways around the consequences to their actions.
First of all this is irrelevant to GP's comment. Second of all, while these products do have net negative impact, we as a society knew about it and failed to act. Everyone is to blame about it.