You miss that 100 classical games OTB are an eternity, and 100 online blitz games are nothing. And yes, while cheating online is shabby, hardly anyone took online chess seriously before the big money tournaments started…
Here is Carlsen taking a move from Howell in a Lichess prize tournament, which he'd never do OTB: https://www.youtube.com/watch?v=qNMcnrmb97g
You miss that 100 classical games OTB are an eternity, and 100 online blitz games are nothing. And yes, while cheating online is shabby, hardly anyone took online chess seriously before the big money tournaments started…
Here is Carlsen taking a move from Howell in a Lichess prize tournament, which he'd never do OTB: https://www.youtube.com/watch?v=qNMcnrmb97g