Google: We Don't Need To Notify You Of Bad Links Because We Just Ignore Them

Since the Penguin 4.0 update Google devalues bad links versus demoting the pages they link to. So when John was asked why Google Search Console doesn't have a way to notify webmasters of bad links pointing to their site, John said "If we recognize them, we can just ignore them - no need to have you do anything in most cases."