Exactly, you need to have a seriously good argument to backup crushing a piano
People struggle to find someone to take their crappy upright pianos for free because they are worthless. Violin players refer to cheap student instruments as violin shaped objects. You can have a trumpet shipped to your door with same day delivery for $90 on Amazon.
How about OK Go exploding tons of guitars?
Making video art is more than a legitimate reason to destroy props. This feels like a silly discussion.
OK Go identified the potential issue beforehand and found a solution that would work for them.