I'm sure there are some smart folks that are overseeing the band practices there. It just looks to me like at some point during what I'm sure were many practices, at least one person in a leadership position would've noticed what pretty much everyone else noticed right away and would've said "umm.. that looks pretty similar to... yeah let's not do that".
I guess people can see whatever they want to see. The band director released the drawing used for practice, and I just don't see what others apparently do. It's a huge "so what" in my opinion.