Can we really blame someone for making dumb t-shirts that aren't in their native language? Well yeah, we can blame anything we want on anyone. We could blame global warming on Tom Gunderson from Scottsdale Arizona. That doesn't mean he did anything wrong, but we sure can blame him.
Most of us monolinguals wouldn't do a good job writing copy for the foreign t shirt market. But that said, most of us haven't chosen to work in the foreign t shirt market, which brings into question the professional decision-making process of whoever made a few of these winners.