That's great and all, but my kids daycare posts photos on a private Facebook channel. Oh and birthday parties come in on Facebook. And I sold stuff on Facebook marketplace that I wasn't able to sell ok craigslist.
It's just a useful ubiquitous app. You can use the features you like. I don't see what the point of taking such an absolutist stance decrying the app as evil. Im just trying to raise a few kids, go to some parties and sell some junk around the house