As a student of mine is against erasure, noting how it is taking someone's words and altering/removing them, I was reminded how I hold this rule in writing workshops--that no one can mark through words as a means of saying "omit this."
Maybe the boundary is the difference between a work in progress and an artistic endevour on an existing work?
Maybe the omission is against a writer "we don't like?" I'm thinking The O MISSION REPO and Voyager.
Or an archaic piece, one like RA DI OS?
I'm going to go back to The Believer article from the beginning of this year to get another look.