> the strongest blitz players in the world are hundreds of points higher rated on chess.com blitz versus their FIDE blitz rating
Online rating inflation is real but I'm not sure blitz is the best example of it because in that case there is a notable difference between online and otb (having to take time to physically move the pieces).
Point is it's kinda hard to take the blogpost too seriously when these fundamentals are so wrong. When literally the title is an immediately obvious error that doesn't inspire confidence in the rest of the methodology.
I'm still going through the games but so far these games are not even close to elo 1400 level. For both the human player and the model.
On chess.com you can chain premoves, on lichess you can't(afaik).
So in theory, to the extent premoves explain the rating difference, the difference should be greater on chess.com assuming they have the same parameters in their rating calculations. Therefore it should be possible to perform an analysis to shed light on this. But someone would have to go recompute the 3 different ratings under the same system first to be able to make a sensible analysis.
Online rating inflation is real but I'm not sure blitz is the best example of it because in that case there is a notable difference between online and otb (having to take time to physically move the pieces).