I can see that. I bought a new (non e)bike for work commute, and my riding style was always accelerating at max, or working hard to keep the speed max. When I went back for their complimentary tune up a few months later, they said they’d never seen a cassette and chain worn so much for a new bike. What can I say? 200lb guy getting to work as fast as possible, every day. Chain and cassette no designs for 200lb guy giving it the most.