Ridiculous! It's not new though, Facebook themselves advertising their impersonators. We have seen when the plan was to launch Libra coin and the same thing happen. Scammers use Facebook to advertise their scams. Facebook's AI technology is failed to detect such as a scam. Reporting them also wouldn't help much as I have reported a few before but all of them was exist.
Even after all this, Facebook has not taken any serious action to prevent such fake websites. If you do research on Facebook, you will find many fake websites that are designed to scam people and promote those websites using Facebook's system. So crypto users need to warn themselves and avoid tempting offers.
Because big companies like Facebook are more focused on selling their ads which is why they easily approve the ads of fake phishing websites.