It's been my experience that this is damaging to the functionality of the site.
Example. Say there are two answers to a question. The answerer pertaining to one of them misses something subtle but important, and accidentally provides a misleading answer. It's not a small error easily fixed in an edit, and requires a large amount of additional content to cover fully. This answer is upvoted and accepted by the asker as the correct answer. The second answer contains these details, but it's clear that neither the other answerer nor the asker have read it.
Anyone who later finds and reads the page is likely to be misled, and there's no obvious way to call attention to the issue without the ability to comment.
If not completely removed, perhaps the requirement should just be lower?