As a drummer who has worked and still works live all the time, and I mean all the time, I have to say that I wouldn't be doing too much bragging about your "friend" who supposedly knows his craft. .
If he needs to use tape, cardboard and towels to get a good drum sound, maybe HE should learn his craft and learn how to tune drums so that you don't need that ridiculous garbage. I can just imagine how bad his drums sound, but the rest of you love it because he's not very loud. I guess that's what you mean by "for the god of the band".
Rami ftw.
Overtones are what make drums musical. Dude must have been playing a long ass time ago, back when drums sounded like wet cardboard and they liked it.