I haven't seen these ads, but this is probably the right move. The irony is that Facebook has built its perceived value to advertisers, investors, businesses, and audience alike on its ability to use deep learning to process all these posts and images and ads and understand what they mean. But here they are explicitly admitting they are unable to do that. It's a healthy thing to do. But it's interesting that it's financial fraud for which they might be directly liable, and not political propaganda, mental health, or explicit racism that brings them to admit their limitations and draw a hard line.