You are *actually* arguing that it makes no sense that the chap who lived in a jar, shat in the theater, pissed on people who annoyed him and wanked himself off in public didn't think exactly like a modern progressive?
You understand that ancient Greece was a very different place where someone who lived as an individual was literally an "idiot"?
And you cherry pick the evidence that shows your goal to be a pipe dream that will end up fracturing into competing tribes.
"tribes" will always exist, so it is best to keep then relatively small and formed around a positive identity linked to a tangible local community.
One size fits all approaches will have the opposite effect as some groups will always feel they are getting cheated out of their fair share.