Facebook doesn’t have to let people post material to their site with very low barriers to entry. Granted they have to if they want to continue to be what they are and to make tons of money... but maybe they shouldn’t continue to be what they are and make tons of money if this kind of abuse is necessarily coupled to those outcomes.
“Well this sucks but we can’t keep operating if we don’t do it”. Well... sure but the solution is right there in that statement. Don’t keep operating.