Except when his friends, family, and various other people ask who did it, and he gives them your name...I'd pass all the way around. I'd just tell him that I was too busy, but [insert the name of the local hack / shop that you don't like ] could probably do it for you.
Odd thing is bashing a business doesn't work like that. Ever hear the phrase: Ya can't tell nobody nuthin'. I have seen this thousands of times in my life.
Someone asks about a business, you quote chapter and verse using factual information why they shouldn't go there and guess what?
They go their anyway, get bent over then whine about getting a bad deal. Then you do this
wondering why you ever wasted your time telling them when they asked.
It is a never ending cycle.
If you are truly honest with yourself you know of at least a couple businesses in your town with shady dealings. You wonder how they stay open with their horrid reputation. Yet they do.
There is a flip side to this too. The owner of said graphic will be soaked to the ankles and tell his buds what a good guy you are to deal with.
He'll tell them you didn't try to be the graphic police and weren't insulting his design.
He'll go on to tell his friends you knocked it out on time and on budget as promised and all future work will go through you.
I have given up trying to figure out what goes through peoples heads. Collecting checks is much more fun.