“Eat, sleep, code, repeat” is such bullshit
I think the OP misses the point of the shirt.  Lot's of different subcultures and activities have this type of shirt.  Someone could just as well wear a shirt that says "Eat. Sleep. Hike. Repeat."  And people wouldn't actually think the person _only_ hikes.  The shirt is completely ironic because to suggest someone _only_ codes all day is ridiculous.  The OP misses the irony.