Earlier quoted context omitted.
Yes, it is. Maybe not physically abusive, but definitely emotionally and trust-ly abusive. You think you are in a relationship with facebook, but facebook is secretly also in a relationship with all kinds of three letter agencies, state actors and advertisers - and tells them everything you told facebook.
If you know it and can prove it, it's not a secret. Advertisers definitely not secretly, you can easily see what information advertisers see at facebook.com/ads Facebook only knows what you are telling it, maybe don't announce your next bank robbery on your status update and you'll be alright
Also, they know everything your friends say about you (your pictures, which they feed into their face rec engine to find you even if you weren't tagged; and the exif data in those pictures often gives location data ...). And they have a shadow profile of you even if you never created a profile yourself.
Oh, and they have a copy of your phone contacts if you use the FB app or the whatsapp app.
All of this is documented by Facebook.
Facebook knows a lot more about you than what you are explicitly telling it.