I said absolutely nothing about contributions, I referred to literally identifying as an ancient Greek/Roman/Egyptian.
While there’ve been tiny improvements on including Chinese and Indian contributions to history, most ancient cultures are ignored. I almost feel bad for the Phoenicians, massive contributions yet barely a footnote. There’s been a steady effort to correct this since the 60s, but the old racist Victorian picture of Greece/Rome being the origin of a white European culture isn’t fully corrected. Adding another false race-motivated picture of Egyptians being the real origin of a white European culture seems to be falling for the old mistake, not correcting anything. “White” is a fiction invented later that has nothing to do with the actual Greeks/Romans. Adding more fictions in education about race to other ancient cultures doesn’t fix anything, it reinforces and perpetuates the problem.
Cultures inevitably invent mythologies about their origins, though I don’t think this makes us better, it’s either neutral or bad. St. Patrick’s day arose from Irish Catholics being persecuted and trying to get acceptance, but wasn’t a big factor in fixing that problem. Now it’s another excuse to get drunk. Columbus day was the result of the Knights of Columbus pushing a racist and horrible holiday into existence. Modern American holidays don’t have anything to do with ancient Egyptians, though. There are Jewish holidays since Jews exist and have holidays. They aren’t national, though. Black History Month/Hispanic/Latino Heritage month are efforts to correct the historical wrongs in ignoring the contributions of non-whites, though, so those are good.