I think there's a misunderstanding and misattribution

If you're like me and follow NDWBB but spend zero time following the NBA, you might have read about the event that Baba references.

In the espn article about it, I quote, "Forward Taya Reimer said the team came up with the idea..." and also "...which the players had made and paid for themselves..." This happened on Dec 13, 2014.

So in my ignorance of the rest of the sports world, and confirming my bias that ND is awesome, at the time, I concluded that the shirt itself was an ND Team creation. But this thread went weird, so I dug some more.

Lebron and other NBA players wore the shirts on December 8, 2014. In light of this fact, I reinterpret the quotes to mean the idea was to wear the shirts that Lebron & co already had, not to create a shirt/slogan. So it wasn't Taya's design. TIL. Maybe Baba fell into the same trap as me.