Because stats aren't everything. His statistics may have been strong but his outcomes sucked. He was visibly disengaged, getting into trouble off the ice, etc. And they eye test, which you dismiss, had many of us commenting on his lack of engagement and poor on-ice contributions. He has said that he recommitted himself this offseason and that fans would see the payoff on the ice as we are. Lavi has noted repeatedly his renewed commitment.
Folks here aren't making shit up. We are seeing the obvious differences in results and hearing the words from the coach and the player himself. If all you trust is the stats, then this won't make sense to you, but if you choose to acknowledge that sports are played by humans with foibles and facets, then you must also recognize that they aren't robots and there's more to their performance than numbers.