What makes you think he is unaware of reality?
He just expresses his demands at this reality, or rather the small part of reality that human society occupies.
I am pretty sure he is aware that the default is rather intrusive - but that doesn't mean that is the right default.
"One of the main characteristics of the society is that its members take business in what other people do with their own lives."
That is your definition of societey, but one I consider close to totalitarian. And yeah, sadly it is the standard, but there are societies that stick together, so each member has better chances of living their own live and not so each members lives the live that the others force them to live.
That's arguably a selfish way to live- where no one cares about anyone but themselves. You would just be people living next to eachother, not a community.
Saying other people may not interfer uninvited in my life is not the same as saying people may not care about me.
I care about other people and interfer in their life, because in the case of my kids, they cannot sustain on their own and they want me as their parent. So there is consent in general about it.
But I am not telling my neibghors that they must wear a warm jacket when it is cold.
(Or that they may not consume porn, to not go to hell)
There is a slight difference between offering help for example and forcing someone to do things in a different way, no matter how well intentioned.
I am pretty sure he is aware that the default is rather intrusive - but that doesn't mean that is the right default.