Why doesn't Facebook auto block scam accounts masquerading as real pages?

Virtually every post I see from an established Facebook page, ie Binance, Yield.app, celebrities, has a comment from a scam account with the same page name and logo, passing off as the original account, saying there's a Bitcoin giveaway.

Pretending to be the original page, they say if you send them Bitcoin, they'll send back three times as much. It's always followed by comments to back it up saying "wow, it really worked".

I'd go as far as to say this is an epidemic on Facebook and there are even people in the news being scammed by these exact setups.

Surely Facebook can automate a fix for this? It's straight up fraud and grinds my gears every single day.