I agree with this, but I'm more worried about the damage to the human. Marching baritone sax is just stupid.Marching bari is in the same category as marching bass clarinet and marching bassoon in my opinion. What is the point? Granted the bari has more volume than these other woodwinds, but the Tubas shouldn't need help on the bass line. Taking any large woodwind outside on the field, street, or in the bleachers is just asking for damage to the instrument. To me the potential harm to the instrument far outweighs its contribution to the "balance" of the ensemble.
I am retired band director who is now an instrument repair tech, so I have seen this issue from both sides of the repair counter. That said, if you must play the bari sax in parades, have someone drive you down the street behind the band in a golf cart so you can play sitting down in a way that is safe to both your body and the instrument.
But if you must, for heaven's sake wear a harness. Screw the uniform.
Any band director that makes people hold any sax straight in front of them, totally unnaturally, deserves to be horsewhipped.:tsk::soapbox: