This is purely to make my life easier, but the "Phacility is winding down operations" blog post has attracted a number of lonely women and Khajiit merchants eager to offer wares if you have coin.
Exposing "Can Interact" as a configurable policy (so commenting can effectively be disabled) seems reasonable as a remedy? I think there can probably be a blog-level policy and a post-level Object policy which defaults to "Use Blog Policy".
"Can Interact" isn't currently exposed anywhere as a configurable policy, but I believe it isn't fundamentally difficult to do this.