Facebook/Meta has shown time and time again that it can't be trusted with data privacy, full stop.

No amount of internal auditing, externally verified and stamped with approval for following ISO standards theater will change the fact that as a company it has firebombed each and every bridge that was ever available to it, in my book.

If the data has the potential to be misused, that is enough for me to equate it as not secure for use.