RE: Proposal for an incremental Constitution and Dapp layer governance on EOS

Censorship of an onchain dapp - as per the example in the article.

But how exactly they would convince ECAF that censorship must happen?

There must be a dispute over an article of the constitution. Which article that could be? And how it is broken by a dapp so that somebody can demand it to be censored? ECAF doesn't have any jurisdiction on things outside the constitution, so it can't give any rulings on them.