Awesome.
Lots to be discussed here, especially for the uninitiated like myself

, though I don't think I can be in the driver seat of that discussion. So many ways to take it.
I love the ending. So often, people hear this kind of information and fall into a state of despair. "If I'm not special, what's the point of living?" , or they deny it with a kind of visceral hatred. I don't understand that reaction, not on a personal level at least. I feel exactly as he describes - by not being special, by not being unique, by not being the literal center of the universe, suddenly everything is interconnected.
By being part of the larger whole, all actions become relevant and important in a way that so vastly supersedes the selfish needs of a single individual, and for some reason this brings me great joy.
It also reminds me of
Stranger in a Strange Land "Thou art God". You, me, we are responsible directly for the suffering and happiness of ourselves and all those around us. That has a far more powerful impact on me and how I act/think than any ethereal deity and ruleset handed down to me by my ancient ancestors, and far more than some existential fear of post-life eternity.

When the end of consciousness comes, are we not to be afraid because nothing comes thereafter?
Consciousness is not ending, it is expanded exponentially and infinitely. And there is much to fear. How do you justify actions without the certainty that any one 'self' is no longer superior to others? If there is no 'me' there is only 'we'. What you do effects, in a very real way, everything else. Everything is a choice, and those choices matter. Collectively we choose what shape reality takes.