No - trying to get an app that has a feature that Apple blocked isn't really the same as piracy. He isn't stealing the app as such - he'd pay for it if he could, but he can't. He wants to use the volume control to snap a photo, but Apple refuses.
This is the only way.
I am not here to condone or approved anyones actions, but I find this statement real funny, so based on what you said if I want to pay for the Popes hat, but the vatican don't want to sell it to me, is it ok for me to break in and get it?