Intrusion-wise I agree, those communication channels are more "pull" than "push" Even though the search engine is ad-funded (I don't know any free search engin

Intrusion-wise I agree, those communication channels are more "pull" than "push" Even though the search engine is ad-funded (I don't know any free search engine) and can be more or less intrusive (IE. Duckduckgo is not) Which channels have been intentionally nerfed?