Most people are entirely unaware of how much data Facebook is collecting about them. Raising awareness about that is a noble goal, but it's not mutually exclusive with stopping Facebook from exploiting their naivety.
Where exactly was Facebook's ever honest about what data they hover up?
Want just but two examples from dozens?
That cutesy rabbit and the super shady patterns used for permission to suck up all your communication on Android would be exhibit #1
I would add the fact that they abused the phone number provided for two factor authentication to spam you with adverts. A clear abuse of its intentions and a kick in the teeth of security in general.
There are dozen more examples. If in doubt search for "The apologies of Mark Zuckerberg" on DuckDuckGo.