@Awoo @LukeAlmighty yup i believe so, everyone was thinking the zonai were an ancient hyrule race that were sort of barbarian in nature. that ended up not really being the case? a lot of people thought they were the interlopers. after the whole sky islands reveal for totk, some people took to thinking that they were either ancient skyloftians or that the sky islands were actually part of the sacred realm and the zonai had ascended at some point but were going to be coming back due to the sacred realm merging with hyrule or cracking, something along those lines. that was probably the closest theory, considering they ended up being descendants of gods.
the frustrating thing is that the barbarian set seems to indicate that they did belong to the zonai, back when we didn't have totk. it talks about them being a warlike tribe in faron. but then the zonai actually came around and that wasn't who they were. i mean, MAYBE there were some that ended up being that way? but we only ever see two of them and one is the king (""founder"") of hyrule and the other is a mystic of sorts. not to mention, the zonai weren't even in hyrule for very long... a few decades at most. it's hard to believe they would have split up into tribes and had specific warring ones, unless it was talking about a subsection of zonai warriors who fought against ganondorf.
to me, it's far more likely that the barbarian set is just some random tribe in ancient hyrule that liked fighting. or, hear me out... it's just dumb flavor text because they didn't think that hard about it. they wanted barbarian armor so they just came up with something. it could very well be an issue due to the lack of a lore master or something, where the team tasked with making the outfits just kind of had to come up with crap.