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Adblockers stop publishers serving ads to (or even seeing) 1bn web users - Press Gazette
(pressgazette.co.uk)
This is a most excellent place for technology news and articles.
I use a degoogled CalyxOS phone so all those apps that load ads via Google services don't even work, or they work and the ads don't load haha. One caveat is that I can't use paid apps either though, I'm not against those.
But yeah system wide blocking is definitely the most thorough method!