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uBlock Origin Is Giving Up the Fight to Keep Ads Off Facebook
(digitalescapetools.com)
This is a most excellent place for technology news and articles.
Unintuitively, detecting the ads is not the hard part of making an ad blocker. The really hard part is removing the ad without the website detecting that you removed it. So even if you had a perfect lightweight model that can detect ads, you still have the hard part of making the ad go away.