Trelja
Personally, I find plagiarism (one symptom of the outright dishonesty in this industry as a whole) a far more egregious sin. Multiple episodes on this site, where the general forum had no issue with it, caused my participation and overall faith to plummet to almost nothing.
I agree on plagiarism and for me, this carries over to design, style and function. I've been tempted dozens to times to start a rant over stolen automobile styling. Certain automobile companies set high standards of style by spending money and putting in hard work, only to have knock off appear in as little as a year.
I think most people are unaware of this or don't care. For some reason it drives me crazy.