Facebook used to post sites you visited. Not even interacted with by liking, it would show that you have read a certain article. They still collect that information, but they no longer publish it on your feed and rather keep the information to profit off of themselves. It's close enough that I'd say it's the same thing.

Worse, they're doing it privately for-profit and selling it repeatedly and indirectly via algorithmic ad auctions.

"publicly", sure. I do find it a bit worse they do it unconsentually to profit off of. For others who may actually want to do stuff to you.