Comment by sgentle

It depends on how you interpret the word "properly". There are ads and adblocker-detection techniques that can't be blocked by MV3-style static filtering.

If "properly" means "can block all ads" then you're wrong. If it means "can block some ads" then you're right. If it means "can block most ads" then you're currently right, but likely to become wrong as adtech evolves around the new state of play.

Don't forget Chrome launched with built-in popup blocking. Now we just have popunders, in-page popups, back-button hijacking etc. Ads, uh... find a way.