Saracens isn't a name, you would choose nowadays it is true but it was chosen as a positive tribute to those people , a spirit of admiration . Its not at all like the unpleasant terms you mention.
Saracens are an ethnic group
Crusaders were a group of like minded people formed to engage in a purely religious war of aggression.again it's quite different.
You do this every time. It is quite clearly the reverse of your Crusaders medal. Both terms originally linked to the Crusades, when our Kiwis tell you Crusade has evolved as a word, you reject that. But when I say that Saracens was at that time even more pejorative, you cite a modern interpretation of the word.
From my linked article.
Europeans used the word "Saracen" as a pejorative term for any Muslim. However, there was also a racial belief current at the time that Saracens were black-skinned. Notwithstanding that,
European Muslims from places like Albania, Macedonia, and Chechnya were considered Saracens. (Logic is not a requirement in any racial classification, after all.)
By the time of the Crusades, Europeans were set in their pattern of using the word Saracen to refer to any Muslim. It was considered a disparaging term by this period, as well, stripped of even the grudging admiration that the Romans had bestowed upon the Saracens.
This terminology dehumanized the Muslims, which likely helped the European knights to slaughter men, women, and children without mercy during the early Crusades, as they sought to wrest control of the Holy Land away from the "infidels."
So no Saracens is not an admirative term for an ethnic group. Don’t insist on a name change for the New Zealanders club, if you will not write to the Londoners and tell them they must change the despicable name chosen for their club.