@ricmac My 2 cents ... in the end the problem is always the same : greed.
FB was born with the idea to reconnect friends/schoolmates/etc.
That's good. But evidently it was not generating enough traffic and adv to make billions, so FB (and the other social media) are always around to look to something that generate traffic/interest and thus allowing more people to absorb more adv that will translate for the social media into $$$$.
That's it. Pure, simple, devilishness greed.
And I think also all of these social media are lost right now, they don't even see themselves anymore as "media" but "content".
Honestly, I will continue to use FB to stay in contacts with friends.
I will simply ignore more stuff, block more bots and imbeciles and accurately avoid to buy stuff advertised if I can (I'm not so much paranoid or full of ideology to starve myself or don't buy what I would like to have :) )