Zardnaar
Legend
As a Jewish man who has watched all of The Next Generation and DS9 multiple times, I never once saw or see even now any anti-semitism in Ferengi. It takes more than, "Well, this act is kinda like this one that people say about the Jews in an anti-semitic manner." Correlation does not equal causation. Just because you can show something kinda matches up, doesn't make the thing you are matching it to the cause.
For me to make the association you say is there, I would need an explicit reference tying Ferengi to Jews. This is why the modern orc argument fails for me, but this Gazetteer 10 is something I find appalling. The OP does make the explicit connections tying it to racism.
I never made the connection either.
For me I think how explicit a deluctiin is with negative stereotypes.
A lot of fantasy cultures or sci Fi cultures are reflective if human traits. So if you look hard enough you could apply almost anything depicted to any one irl.
Eg if a culture is Militarist you could lump that on multiple cultures or civilizations.
But if that culture gas an emperor, senate and legions it's a bit more explicit as to what they're basing it off.
In Orcs of That the depiction is a lot more explicit. For me the latter is fine former no.
And long extinct cultures with no direct cultural connection to modern age is reasonably safe although I still would do it in a mocking way.
UK for example is a melting pot post Rome modern Egypt has virtually no connection beyond geography to ancient Egypt.
Modern Greece has a lot stronger connection to ancient Greece eg linguistics.
So it depends on how explicit something is and the context of what you're consuming (documentary vs movie vs reality tv etc).