On the other hand I can see why people are treating facebook more like an utility and not a service in a competitive market: the size of its network is now huge and too many people rely on it to receive and propagate information.
The problem with facebook, in my view, is they have (understandably) developed all these tools for you to easily add things to it but make zero meaningful effort to let you (as user) erase things you have place there. After a decade of using facebook, why can't I easily unlike everything I liked? why can't I go and unfollow (massively) "friends" from 10 years ago? why doesn't facebook REALLY delete my content when I tell it to?
I am free to leave facebook or stop using it, but apparently I'm not sure to stop facebook from keep using my old content for eternity. if this was a company that could fold tomorrow, I wouldn't care about this. But its facebook. it's the power company, the water company, the government, and they have my data and does not let me trim it.
Their algorithm acts like a "sad" person who after several desperate and failed attempts at getting my attention to use the service resort to showing my ancient posts/photos to people who are likely to interact with me so that I have to login and use it. It's a sad service.