Wikipedia isn't as authoritative a source as you think it is, especially for subjects like this that are heavily gatekeeped by people with an ax to grin (without necessarily having the actual credentials to back it up)

And heritability doesn't mean what you think it does

I'm choosing to believe you're arguing in good faith, so prepare to ingest a decent amount of material if you want to understand why: http://bactra.org/weblog/520.html