this is a special case because while it is a commonly accepted usage it is also commonly accepted usage for a host of other concepts of divinity that often differ dramatically from the yhwh of the hebrew bible and ezekiel specifying yhwh as per the text is surely an improvement over the generic term being more precise and if i'm not mistaken the vatican is the major significant party to restrict usage of the hebrew term among themselves in favor of non hebrew names for some doctrine of theirs of papal infallibility i don't see that as an overriding reason not to use the more specific hebrew name where it is more appropriate however i agree with john that use of the name yhwh for god in ezekiel can be more fully explained in a section of text talk