First of all, the title is misleading since Google wanted to kill only popunders opened from iframes. Oh, and this is a 6 months old information by now.
So, this will affect only sites that have annoying ads, based on common sense.
If you are still afraid you might get hit, you may check out this tool.
https://www.google.com/webmasters/to...rience-desktop
Google published a new tool for Webmasters on the official Search Console website that provides you with information on the site's ad experience status.
If you own a legit site, there's no reason to worry.