I don't think I've ever seen a user with an Ethereum address in their personal text make valuable posts. Just 3 earned Merit on a total of 943 posts proves my point So I don't really see the point of adjusting the forum software for this.
Moreover, on your second point about valuable posts, I wouldn't consider the example I presented as a representative one for any reason. If from the forum's side all it takes is just a couple of lines of CSS, then I don't see why we shouldn't have a fix. It might not be a big deal or not widespread, but I'd take into account how easy it is to fix also, even if it's not super important.
Edit: spelling