This season, Messi's performance is nothing to be proud of, let alone the first 6 matches in Ligue 1 with PSG there have been no satisfactory results, without the contribution of goals and assists so far it proves that Messi failed at PSG and does not deserve to be included in the domination of the Ballon D'or winner, plus Again the previous season with Barcelona he only managed to win the Copa del Rey and I think it's better for Kante to win the Ballon D'or this season.
I do not agree with this. He hasn't shown good "stats" yet, and that is very bad for a player like Messi who is known to be a big time goal scorer or a great passer. However he is playing for a new team for the first time ever since he was a little kid. It is understandable for him to have a bit of a tough start, this wasn't a good idea to begin with to get a player like him at that age when you consider how he played in just one system all his life.
However considering all of this, he provided a lot during UCL and that is what they really need. They can win the league without him with ease as well, last year was a fluke but they are good enough to beat everyone and win the league without ever needing Messi. However UCL is a different stage and Messi has already won it and he is a great veteran that brings in those stats there as well, so he is not really fully bad just yet.