Facebook does analytics...they aren't some tiny startup...surely they track the quality of their traffic...so they know that 70-80% of their ad traffic comes from bots.
So Facebook is knowingly profiting from this, and they have the resources to fix this...but they don't since this is making so much money for them.
So Facebook is knowingly profiting from this, and they have the resources to fix this...but they don't since this is making so much money for them.