Many browser extensions support whitelisting (opt-in). Can't think of any reason that wouldn't work for phones. Blacklisting (opt-out) is a never-ending canard.

Many browser extensions support whitelisting (opt-in). Can't think of any reason that wouldn't work for phones. Blacklisting (opt-out) is a never-ending canard. This WaPo 'article' looks more like a native ad.