If modern media a DoS attack, it's not very sophisticated since it can be easily avoided by non-participation. Install an Ad blocker. Browse the web in private mode. Turn off notifications. Treat everything you read with skepticism (assume it is trying to manipulate you). And never, ever interact with social media. Share your attention deliberately, mindfully, and voluntarily.
I don't buy into this victim mentality. Nobody is "stealing" my attention unless I agree to it.