I mean, isn't it the whole idea(centralizing) so we can work together? And what do mean with 'our' who are you? Also are you aware you can have your own instance?
I like following programmer fellaz. Even tho half of it promotes its tutorials, its still good to see full of stuff about programming, whats going on around. And there is good amount of interaction on open source, react, graphql related people as far as I see.
From my point of view, I do care about privacy, beside I don't use mobile phone, I don't want to. Since whatsapp isn't an option for me, messenger app is only way to be in contact with friends, family. (I have iPod Touch) Considering I'm traveling often, I need to use it. I'm not fan of it, but I'm not against either. In the end we are product of Facebook and #deleteFacebook is a joke.