I have two people I'm close to who suffer from OCD, and I deal with clinical anxiety. I feel uncomfortable/sad that OCD is used casually and incorrectly, but I struggle with finding a way to deal with this issue, because I don't think it's easy to do so without coming across as shaming/scolding other people.
I would rather that this shirt design didn't go forward, as that nagging sense of irritation that many of us feel about seeing a design flaw is not at all the same thing as panic attacks, sleeplessness, intense irrational fears, and other symptoms that are OCD.
However, I do understand there being various opinions on this, and I'll be interested to see what the artist and Woot decide.