You seem to have felt like your society was attacked as worse overall, which @Elliot did not say, and I’m very doubtful that that is his opinion. You didn’t state what view you were arguing with or ask if @Elliot believes it. Instead, you got defensive against a perceived threat and started arguing that your society is better.
Athens probably ritually sacrificed cripples
This shows bias and defensiveness because it’s not a reasonable summary of the Wikipedia article that you linked (nor of several other sources I found on the web). Wikipedia:
A slave, a cripple, or a criminal was chosen and expelled from the community…
You tried to make it sound like the ritual was focused on disabled persons, but it wasn’t. You left out slaves and criminals because they didn’t fit your point.
You also said “probably” but the article didn’t say that. In fact it said regarding human sacrifice:
many modern scholars reject this
You didn’t provide anything like a fair summary of your source. You had an agenda.
To be fair
This suggests that what Elliot said was unfair.
points to a way our society is better, which is that Ancient Greece took that physiology-determining-ideas stuff way more seriously than we do
In general, taking seriously the ideas that you have is a virtue not something bad.
Also, you said what you thought Elliot’s point was, but then you offered no direct comment on it. You didn’t agree or disagree. You started talking about a tangent without saying why. A common reason people do this is because they agree but don’t want to admit that they agree, because they’re trying to argue with someone and don’t want to concede anything.
Your summary of Elliot included this biased text:
ancient Greeks were better than we are because
Elliot’s significantly shorter version specified that it was a(nother) way Greece was better, but you left that out, which makes it ambiguous whether Elliot was saying that Greece was better overall or just in some ways. With your wording, it’s more natural to read it as meaning overall rather than in a particular way. Then your replies seemed aimed at arguing that Greece was not better overall.
Making biased errors like these is common but makes it difficult to have productive discussions or to think effectively about decisions in your life.