Your gross simplification of the issue is unfortunate. TV has never been able to track you and change its programming to the extent Facebook can.
I think the best example are little kids with no self control watching endless amount of dopamine hitting videos like kinder eggs. People realized little kids loved these simple toy opening videos and the algorithm was more than happy enough to increase engagement by feeding kids these videos.
What's wrong with this? Lots of people like television. I like television. My life isn't that great and I'll take the distraction, thanks.
Moreover, "who cares" now includes numerous former (and current) Facebook employees, executives, and investors.