Not really oversimplified as those are penny articles sold for a lot of money. It's all about the bits and pieces that have to come off the bike to then require gasket / seal replacements. I wish all manufacturers could get to decent valve adjustment intervals like Yamaha with the Super Tenere or even the little WR250X/R. It feels like we are living in the stone age of engine design here ... Worst is the BMW boxer with 6k check intervals, at least it's a quick job per side. Not certain whether the new one is still like that.