A somewhat strange question? Then tell me why publish your photos on the Internet at all? I don’t know how much everyone is aware of such information that if a photo gets on the Internet once, then it will never be removed from there. Everything remains in the memory. If, after a lapse of time, someone wishes to change or erase their information, it will be unsuccessful.
What should Facebook users do? Change passwords, do not register with your data, do not post photos, etc. All social media are evil. In our time, it is becoming more and more difficult to have the right to confidentiality, and those who regularly publish information about themselves, and subsequently suffer from any scammers, should only blame themselves for this.
What is even more worse is there are people, and they are many, I know who use to post also pictures of their little underage children who may or may not agree to be fully online when they have reached a maturity of thought such as to exercise free will. And this decision their parents are taking now on their behalf is irreversible as you correctly pointed out.
It happened to me as well to be taken in pictures then posted online, in friends social media profiles, while I have been in the company of friends who have an unhealthy habit of publishing their lives online and without being asked for consent as if it were the most natural thing in the world and I find it really disturbing; and when I point it out they deal with me as if I was the weird one.