1. Tani is rapidly moving up the ranks. He's only 10. Presumably the rating difference was much larger just a few months ago.
2. 300 points is still quite a large rating difference.
3. In many disciplines the best practitioners are often not the best coaches. You might speculate that being the very best and most talented would make a worse coach since the struggle to increasing levels was easier.
This is anecdata. I live in Pittsburgh and have never had a smell issue. I've never had a coworker complain about this to me either. There's a good chance the author could have solved his smell issue by moving down the street to a different neighborhood.
2. 300 points is still quite a large rating difference.
3. In many disciplines the best practitioners are often not the best coaches. You might speculate that being the very best and most talented would make a worse coach since the struggle to increasing levels was easier.
4. Even Tiger Woods had a coach at his peak.