@John Titor by the same token some skins replace the Poweramp flash for missing albumart. This would also rate as undesirable
Although the whole subject under discussion is fairly trivial, thinking about it some more, I believe the fact it is skinnable is probably intentional.
A user is well aware that he/she is using Poweramp but not necessarily which skin is active.
As many users have multiple skins installed, the display of the skin name is therefore, in my opinion, a good idea.