I was with you until this piece. Not everyone is well educated enough on the nefarious nature of targeted online advertising and the technical processes of blocking them on each platform.
In some EU countries we have pretty strict regulations on what ads are allowed, where they're allowed and for what they're allowed, precisely because not everyone can "mentally ignore" them and people can be easily influenced.
So you can't just say "well, it's you're own fault you got addicted to opioids/gambling/drinking/smoking, so you get what you deserve", when the whole city is plastered with ads for such accessible addictions. "Got a tooth-ache? Ask your doctor about OxyContin." "Got trouble paying the bills? Get a loan with 500% interest rate from us on the spot." "Wanna look cool? Smoke Bullshit cigars."
Usually, the less educated and less well-off people are, the more vulnerable to nefarious and predatory advertising they tend to be, so it's the responsibility of us as a society to take legal steps of ensuring the regulation and blocking of targeted web ads at communal/societal level instead of leaving it to the individuals and the mercy of the "free market".