Why can’t Meta block scammers pretending to be Facebook on its own platform?

It baffles me that Meta can’t stop these scams when they occurs on its own messaging platform.

If you manage a Facebook page then you’re used to receiving scam messages telling you your account is about to be deleted. A typical message looks like this:

We have detected that your Facebook page has been schedule for permanent deletion due to a post that violates intellectual property rights [or impersonation, et al].

If you believe this is a misunderstanding, we kindly ask that you file a complaint to restore your page before we remove it from Facebook.

The messages try to get you to click on a link to submit a request to stop the page cancellation.

I found it humorous when I received a message from Meta this week telling me to “make the most of your messages.” It encouraged me to “Respond to more messages”:

Your response rate is the percentage of messages that you respond to. We recommend you respond to at least 80% of all incoming messages.

OK, but what if 99% of my messages are people impersonating Facebook?

What I don’t understand is how Meta can’t detect these scams on its own messaging system and block them. It’s obviously a problem for Facebook if its page owners are getting duped.