Just like writing, you need to know proper spelling and grammar. Once a writer has the basic down, he or she may break the rules and use bad grammar or misspellings intentionally...Blur and grain with photos should serve the art otherwise it's just bad technique
Agreed. I think that answers this comment as well
When did "bad" (as in not the best achievable result) become the new cool?
If it is intentional and serves the art then it isn't bad technique. It's really really good technique.