Definitely not, browser extensions like U-block origin are much better because they have the context of the browser and DOM access. So ads aren't just cut out,

Definitely not, browser extensions like U-block origin are much better because they have the context of the browser and DOM access. So ads aren't just cut out, but the space where the ads would be are too. So no white blocks stopping your reading or ":( can't display this ad" nonsense.