What leads you to believe the people spreading fake news on WhatsApp and Facebook, leading to death and violence, aren't already real people using their real names?

In articles like https://www.wired.com/story/how-whatsapp-fuels-fake-news-and... there's no mention of anonymous, fake, or untraceable accounts, just real people being outraged and sharing misleading, sensationalized, or outright fake news, ultimately leading to tragedy.

Not to mention, your proposal is barely different from what Facebook already does.