I am not against advertising in general. It doesn't bug me that there are ads for car dealerships on TV, but the flood of personal injury lawyer ads damages the perceived legitimacy of the government and social system. (As well as the many other ads that are not aimed at getting people to spend their own money but instead to get benefits such as the "Medicare Advantage" scam.)
Web advertising and other distractions (pop ins, "will you let this site make notifications?", Taboolah, Outbrain, "This web site uses cookies...", 20 email messages a day about IBM Cloud outages that didn't affect me, "GDPR is here and our policy has changed...") are immediately harmful in terms of cognitive load (lowers effective IQ,) stress, mistakes, missed appointments, opportunities, bills not paid on time because you had to delete 200 spam messages and accidentally deleted something important. That and the phone that never stops ringing with somebody who wants to lower my interest rates...
I think long term you are training your brain to not accept the cues that "something is important". After 20 or 30 years of that who knows what that will do you? (Whenever I show my wife something from a porno site she can't see the content in the midst of all the lurid and animated advertising.)
It is like Milo Yiannopoulos; it looks like communication but it is better to think about it as noise, static, or nerve gas.