That it is, though that just highlights how much that approach to social interaction only serves to drive a wedge between people.
Incidentally, you just brought up one of my issues with the series, that being the fact it brings up the genetic similarities between Lilim and the Angels and then never brings it up again. End got tasked with resolving that plot point (and quite a few others), but because of the short run time and the fact End has its own plot to address it's simply answered in a line of exposition from Misato.
Initially I just chalked that up to the series' production trouble, but even then I eventually went "Wait... How do you know that?" And yes, I know she read it from the files, but that only shifts the question to "How and when did NERF figure this out." If being that genetically similar is enough to be called human, chimpanzees are also human.
As an aside, the revelation that the Angels are human is a great twist for shining a spotlight on the concept of the Other, but Misato thus labelling the Lilin as an Angel results in the two terms meaning exactly the same thing, which is less a problem with the series and more a headache in trying to discuss it.