Or the post-1960s leftist interpretation of those who aren't leftist. lol
Probably true as well.
As to there being no Germans, there was that guy in that TOS episode mentioned previously in this thread. Trolain (the alien who obviously inspired the "Q" character) insults one of Kirk's crewmen by denigrating his German heritage (as he does with several of the landing party).
As to there being "no Jews" there are probably still Jews (ethnically, if you accept that sort of thing), but since religion in general is seen as "unenlightened" by Starfleet (notice the only really "religious" people are aliens, or the Native American tribes that live in self-imposed exile in space... of which Chakotay is a descendent), its simply being phased out of existence, unless its practiced in secret of course.
If you asked most Starfleet personel in the 24th century what religion they are, we're lead to believe, they would be agnostics or atheists.
I will qualify that by saying some of Roddenberry's secular humanism appears to have "mystical" elements (a "mystical" humanism? it's possible), in general it rejects all human religions as being corrupt, hypocritical (and therefore to be forgotten except as a passing curiosity), or totally irrelevant to life in the Federation.
Yet, it's perfectly acceptable to exploit religious belief if it furthers Federation perrogatives (note Sisko's role as the "Emissary" to the Bajorans).