The error is relying on a computer program to make an otherwise poor shot look good.
How is it an error if it succeeds?
Being consistent with what I said before that, I have to agree. I suppose what I meant to imply is that being good at editing photographs using computer software doesn't make a person a good photographer.
On a personal level, I think photography should be about using focus, shutter speed, aperture, filters, ISO and flash to your potential to create the composition you see and then ironing out the wrinkles in post. In other words: I try to edit my photos as little as possible to achieve the composition because I am capable of so much using just the hard ware.