Nothing is destroyed; the person who wrote the article can ask an admin to get its text back so they can publish it elsewhere. I don’t get this "Wikipedia should host everything" mentality: if you disagree with the rules, just publish your work somewhere else. The number of articles need to be manageable, so rules are needed.
surely if an article exists and is shown to be being poorly maintained, then perhaps it's worthy of dormancy or maybe deletion. why do it pre-emptively?