Would it be better if the guy ran around with a Nike shirt, or Underarmor, Yeti, Realtree camo etc.? All made by slave labor in China which YOU pay THEM to advertise, now that seems stupid.
This reminds me of some topic when I first joined about facial hair, strange how opinionated we can all be about other people's business. We're all advertising something whether we realize it or not, and I'm not talking about branded shirts either.
It used to really bother me, and probably still does a little, that people have animals in their house. I just was not raised like that and it seems downright unsanitary to me. At some point I realized that it isn't me that has to put up with it, but the other person, so why worry if it doesn't affect me. Same deal with weird piercings, hair, tattoos etc. Now those people know how to advertise, and apparently it's working for them cause sometimes I can't stop looking!
I understand where cross-7 is coming from, but it sounds like the guy is having fun with it, maybe some "hey look at me" in there but he's obviously not hurting anyone and by the sounds of it a decent guy. I'm in the business, and believe me, this is a "thing" now. People with tiny patches of blueberries get shirts and signs done, and they have fun at it. Nobody takes it too seriously, and sometimes the t-shirt sales make money where the actual business won't even turn a profit! Not saying this is true of this guy, but it is for many other branded shirts you see running around.