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 I think that's a foolish notion.  Should we have a stub page to tell daft and silly people that the flying wiki monster does not exist?  Though wiki is not paper, I think that the answer to that is an obvious "no".  But, you say, we already have a page on radiation.  The flying wiki monster would require the creation of a new stub, a bit of extra effort to monitoring it for vandalism, and all of the expenses that go into any page.  The radiation page, on the other hand, already exists.  It doesn't cost anything to add a few links in case some inquisitive chap comes along. 

 On the contrary, I say, cluttering up a disambig is even worse.  A flying wiki monster can sit in the database all by its lonesome, but anything you stick on a disambig page (particularly one as popular as radiation) will be looked at repeatedly.  It will get in the way of all kinds of people.  The job of a disambig is to get readers where they want to go, as quickly as possible.  (See Wikipedia:Disambiguation and Manual of Style (disambiguation pages)).  If we clog them up with all manner of nonsense, like this sampi radiation, we'll bog the reader down.  Furthermore, every time you make a link to a nonexistent entity, the database knows (see Special:Whatlinkshere).  Make enough links, and the term starts to acquire a bit of implicit respectability; I don't think we want that.  So let's take the nonsense links away and have no more of this.