Living in a country of 1.5 million people, it often feels devastating how big a part of political/intellectual discussion in our (tiny) language actually takes place in Facebook. I have worked in journalism, so maybe it's sour grapes in a way, but: most of the great writers are there. All the politicians are there. Our prime minister first announces crucial things on her FB wall, etc.
In short, if you want to participate in the public sphere of our tiny society that yet speaks its own tiny language, you'd better have a FB account. The account provided by an American Megacorp, that is. This actually feels really strange.
I've been more or less off FB for 5-6 years, occasionally feeling lonely and intellectually isolated. I would love to see things like the Fediverse/Mastodon or tilde.town take off for speakers of our language, but I'm having doubts whether this could ever happen.
For the lingua francas, there will always be a considerable chunk of alternative culture and great, bright discussion outside dominant platforms (howdy, HN!). For smaller cultures, this relationship status is surely complicated. FB is just so damn big.