Not a fan of AC/DC so I'm surely speaking out of turn, but this writing process seems a bit ridiculous to me. Yeah I get that not every song penned is created out of some random source of inspiration and that plenty of acts noodle around as a group to find ideas. But "We’re going to pick up some guitars, have a plonk, and see if anybody has got any tunes or ideas. If anything happens, we’ll record it.” seems so silly. Shouldn't be a forced process, probably why there's too much music out these days.
if there's too much music out these days, it's definitely not because of ac/dc