Facebook mobile is a suboptimal experience, which is fine, it just reminds me to use it less.
They also go out of their way to make it hard to save a photo without granting full access. Creepy.
What pisses me off, though, is that I didn't find a way to give a contact a name without allowing it access to the phone's contacts.
But now Whatsapp retains access to all the photos I added unless I go into settings and revoke access to those photos. Creepy.
And yeah the contacts thing also pisses me off. They know what they are doing.
I think this is good enough. If you consider they do shady stuff with your pictures, you might as well consider that they hold on to anything they get their hands on right away.
My idea is that if WhatsApp can't be trusted, once it gets access to any file, it will hold on to it. So revoking access to something it already has won't accomplish all that much, since I've already figured that I can share that file with them.