I think Arteta deserves to be retained because he is the only one who is able to bring Arsenal to this point, even though this season he failed again in my opinion it was a ridiculous decision for management to fire him because he is the only coach who has brought Arsenal to become a competitor in the EPL for the past two seasons, surely Arsenal management understands the process experienced by Arteta and Arsenal to become a solid team because the process takes quite a long time and is not as easy as turning over your hand, let luck answer all of that regarding the championship title that has not been obtained until now.
In the last two seasons Arsenal have really improved under Arteta's guidance and this cannot be denied by the team management because last season Arsenal was also a challenger for the Premier League title even though they were not lucky enough to win the championship last season. And at the beginning of this season Arsenal have also been able to win two matches for a good start to the season so there is no special reason for the management to fire Arteta, unless this season Arsenal really gets bad under Arteta's guidance.