The first time that happened to me - she said it in not those words but in a more subtle way - I was shocked. It took me a few moments to ingest the complete lack of empathy.
I'm no advocate for it and rarely journal except for in specific circumstances that have a clearer goal; however, I would think it to be therapeutic, a way to introspect a little before moving on.
Eh, I always think it tacky to wear shirts that exist just to assert superiority or denigrate the reader. They all just seem like variations of "I see stupid people" shirt.