I think the issue you raise about how to write the article is reasonable, but the issue about length is not a big deal. All I am trying to do here is give readers an indication of what type of thing is being discussed. In that respect the wording as it is now (on that particular point) seems uncontroversial. If you look at all the examples of EVP you can find, almost all will be the length of single words or short phrase although occasionally (as on, e.g, the Ghost Orchid CD) longer examples will be offered.