The problem is that most indie games render at 2x or 3x or more natively.
Artistic preferences are subjective, but I expect most players would find that rotated sprite unappealing. This is especially true when the rotation is animated - the aliasing causes a distracting, staticky, random-noise effect which gives the impression that the sprite's fine details are chaotically changing. It's almost the aesthetic opposite of what most pixel artists are aiming for.
That’s the reason why some games use versions of the rotated sprites that have been tweaked by hand. See also tools like RotSprite (http://info.sonicretro.org/RotSprite).