Chris isn’t clueless. A standard could be made for a no comment post. It would just require an agreed to standard to mark a post to not take comments. If Mastodon implemented it, a giant piece of the Fediverse would do it. The trick is software that ignores it. It would be an effective block to any instance that respected the flag on the post.

Not perfect, but probably effective enough that any comments would only be propagated to instances that did not implement the standard. Then the advocates of that would start blocking domains that don’t respect it.