Your first example is precisely what I mean.

Making the FPS higher, might require some creative hacks. Making a 3D model look exactly like your vision might require highly technical knowledge about your tools.

Going beyond acceptable standards, imo, requires both technical and creative skills. And I believe the split is closer than we think.

On the second note, I understand the point, however, it's subjective how it makes the person feel. I have seen many instances of "creative" people shy away from technical things because its "not who they are" and vice-versa.