I think you're completely wrong, especially about 1. Human nature doesn't shape our technological reality, it is becoming more and more obvious that technological reality shapes human culture. And people mistake culture as "nature".
Human nature is very plastic, trying to fit any one thing into "human nature" is (this is my humble opinion, please don't be offended) very bigoted.
On the plasticity of human nature, here are a few of the many unfortunate things that will never be excised from human nature: self-absorption, self-deception, groupthink, dehumanization of the outgroup.
Culture can modulate the expression of these things, and if we're lucky, mitigate them somewhat. But they never quite go away. They always find a way to manifest themselves. And it is the people who think they've transcended these things who are most at risk of indulging in their worst excesses.
If you don't recognize the durable aspects of human nature, you're setting yourself up to be at best a dupe and a mark, and at worst a monster.
Of course, I didn't believe this when I was young either.
I agree that zealotry is best avoided.
However, please note that cutting people out of discussion "because this is something you'll learn as you age" is not a great way to convince them of something (which may not be your goal).
You've ignored the majority of what I've said, including everything about how age is not a bright dividing line between the wise and the foolish.
Evidently you want to keep believing what you believe. So, go ahead and do that. I really can't stop you and don't wish to.