While references to colonizers was a shared history centuries ago, indigenous people continue to experience repeated colonization efforts presently throughout the world; because colonization wasn't a single event. Needless to say YES. While the gear pieces wouldn't be as big of an issue if released otherwise, the CONTEXT of releasing conquistador + musketeer gear in an expansion inspired by the PRE-CONTACT AMERICAS *is* offensive!
THE PROBLEM
I have my own reservations on the way Dawntrail has handled the variety of cultures across the two continents as a latino; but to take inspiration from military gear, not even really resembling Steiner (closest comparison to FFIX), is a poor decision considering the colonizing force parallels drawn from Alexandria/S9 in FFXIV.
1:1 replicas aren't necessary to inflict the same wound or draw conclusions, as many people in this thread already have. Replacing chestplates with tabards still has the same connotations. We didn't get gear inspired by the British army while going through Thavnair, the team had the tact to move away from SS/Nazi influence for the Garleans despite parallels in authoritative power. Even Star Wars is more on the nose with its visual inspirations for the empire + aren't afraid to make them wholly antagonistic. Why now?
A previous poster offered a good point with SQEX's design philosophy in Stormblood: "We can't use anything that has real-world religious or cultural connotations. If we want to make something that draws from religious imagery, ethnic clothing, and so on, it needs to be significantly altered."
PROPOSED SOLUTION.