The team hasn't won for years and the fan base is to blame?
Winning or losing happens during a regular season. After all, no one wins 82 games in a row. But everyone can see when the process itself is wrong and will lead to failure in the playoffs. In fact, I see no difference in how they are playing right now vs. the Columbus or Montreal series.
No one can look at Marner and say he's changed a single thing about his game since those failures. The only changes are the ones forced on him such as his positioning on the PP.
It's easy to see why people are upset and don't value regular season performances win or lose.