> "Ad blocker" is #1 thing that should be installed first on every single browser, everywhere, to block third party ads.

Agreed. But I don't block ads just because ads are annoying. I don't even block ads because I don't like being tracked. My reason for blocking ads can be summed up in a single word.

Malvertising.

As soon as ad networks began trying to spread malware through ads was when ads moved from being a nuisance to a serious security concern.