Earlier quoted context omitted.
That's why the solution is liability: Companies will keep leaving unchecked algorithms responsible for this until they can go to jail for doing so. Adtech is a cancer and it's time to cut it out using every legislative and regulatory option we have. Put Mark Zuckerberg and Sundar Pichai behind bars and the problem will correct after that.
Liability for what exactly? How about people who actually commit bad acts are the ones responsible for it? It seems like you haven't really thought about this and are just personally against adtech and those companies. That's not how rights and legislation should be decided.
"Strangely" enough this does not apply when corporations' money is at stake, hence sites like The Pirate Bay are held responsible. Taking 2 opposite approaches for the same issue in order for the lobbying corporations to profit is a sign of acting in bad faith.
Facebook built this 2 billion people village, exploited them and collected taxes, then said "You know what? Policing it is hard so let the governments do it". And the governments should do it. EaaS - Enforcement as a service. And as any service it should cost. No personal liability needed, once money starts pouring out of the companies' coffers you'll see how quickly they find a solution.