But ads have been a thing since the Egyptians started to write sales documents on Papyrus, but it is only in the last 20 years or so analytics have changed the game: I suspect that I might have been slightly of in the previous comment, maybe it is only when analytics can note the effect of individual customers actions that they matter.
Yeah this is honestly the biggest reason for me not to use medium. I genuinely cannot help selecting text and clicking the paragraphs (highlighting them) while reading. God knows how many mice have died in my care. I think it might have to do with ADHD or something, but I've never been tested.
Again: STOP OPENING POPUPS WHEN I'M SELECTING TEXT!