I began to see this recently. Web sites of dubious lineage, making you wait a few seconds before popping up a request to confirm that you are not a robot, by clicking “Allow”:
By clicking “allow”, you are simply confirming that you are a gullible, innocent victim who just allowed a scamster to spam you with bogus notifications (and I wouldn’t be surprised if at least some of those notifications were designed to entice you to install software you shouldn’t have or otherwise do something to get yourself scammed.)
Bloody crooks. Yes, I stand by my observation that the overwhelming majority of human beings are decent. But those who aren’t are no longer separated from the rest of us by physical distance. Thanks to the Internet, all the world’s crooks are at your virtual doorstep, aided by their tireless ‘bots.