I can't be the only one who first thinks of the Caliphate of Cordoba when I hear Umayyads.
https://en.m.wikipedia.org/wiki/Umayyad_Caliphate
Umayyad Caliphate was first global caliphate, with capital in Damascus, and they were guys who did most of the "crazy expansion" stuff. They have also begun mass translation of Greek, Persian and to lesser extent Indian thought to Arabic, which eventually have birth to scientific explosion. But still, the real beginners of Islamic medieval scientific revolution were Abbasids - it is under them (heavily Persianized dynasty rising in coup against Arab domination of islam) when we get first actual scientists, it is them who begun it all with their enormous scientific patronage in Baghdad, and ruled over the most productive era in the history of Islamic science.
Umayyads, after being overthrown by Abbasids, survived in the last vestigial remnant in Iberia, caliphate of Cordoba (also referred to as Al - Andalus, Moors etc) and eventually they have joined the great scientific adventure with their own achievements... Later, after Abbasid initial intellectual wave arrived from the east.
My point is, it is not exactly stupid to make specifically Umayyads the scientific culture, but it would be really strange to do that instead of going for much more straightforward routes of either giving this focus to Abbasids or just naming the culture "Arabs"

Given other signs, that makes me expect Zapotec aestethe civ and Arabs scientific civ. Not the very akward alternative of aestethe Aztecs (lol) and scientific Umayyads (why specifically them instead of Abbasids or just "Arabs" like "Persians"?)
EDIT
Lol I have forgot about Aztecs being in open dev. Goddamnit here goes my great theory
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