I've seen a lot of . . . . interesting ways of writing out calibers from the "mainstream media." Reporters have no idea how firearm nomenclature works, and honestly, it really is a very complex topic if you don't grow up with it. Not only that, but most of these people don't even realize that there is a right way to write these things, so it doesn't occur to them that there is a wrong way, much less that they're doing things the wrong way.
But this one is new even to me. Maybe you've seen it before?