These are all well known factors to the intellectual development of humans.

There's not an onus of proof on someone who says the sky is blue or water is wet. We need a certain foundation of understanding to have productive conversations.

And we all have stuff to do. Suffice it to say, there is plenty of supporting evidence for the claims.

Ok, but "got any sources for that?" is a rather unsubstantive contribution, and then going on tilt about getting downvoted breaks the site guidelines outright. Would you mind raising the signal/noise ratio of what you post here?

https://news.ycombinator.com/newsguidelines.html

If they are not extraordinary claims, they don’t require extraordinary evidence. I’ve personally heard all those points before in some form.