No it isn't. My point is that you can pick holes in basically any player's performances over the course of a season. It's fair enough to criticise Haaland at the moment but acting like the most revered strikers in the club's history haven't also had under-par seasons is ludicrous.
The same thing will happen again in 5-10 years when Haaland's gone and the new striker we have isn't performing to the same level - we'll all basically pretend this season didn't happen because Haaland will have played about 300 games and scored over 200 goals for the club.
"Haaland had that slightly underwhelming second season, though, you remember?" someone will ask, and the response will be "Are you joking, he scored 35 goals in his second season, we'd kill for those kinds of numbers now", etc. It's like how people pretend Mahrez and Gundogan were always perfect.