No matter how weak Manchester United looked this season, they eventually won the trophy, and Arsenal, which was much better, remained nothing. But at the same time, no one is saying that Arteta could be fired, and there are constantly rumors that ten Hag will be fired. And for Arsenal nothing is guaranteed for next season, they could also remain without trophies, Chelsea, Newcastle or Tottenham could become stronger, or Liverpool will have a more successful season and for Arteta it will all end again in a season without trophies...
That happens because all aspects seen in this case do not refer to the trophy at the end of the season but to the performance shown to date.
The reason why many people want Ten Hag to leave is because he is not really worthy of his current performance to keep Manchester United even though the trophy is still quite good because indeed every season always gets at least 1 trophy but that does not make fans happy because in the end they are still bad for the competition in the EPL.
In contrast to Arteta's current condition even though he is currently even in the last 2 seasons not getting trophies when intense competition occurs but no one will think he should be fired because indeed in the last 2 seasons Arteta with Arsenal made an extraordinary breakthrough even this season they competed until the match in week 38 which means Arsenal's performance has greatly improved at this time so there is no reason to dismiss a good coach like Arteta for now.