Earlier quoted context omitted.
What's the point? What one person needs at one point in their life is very unlikely to be what another person needs - it might appear banal or unintelligible to another.
Instances are asked for the purpose of possible generalization.
Towards the negative mainly but also maybe towards stopping negative behaviour or thoughts. "Why care?"
Nihilism is an idea that has changed the world.
The rest of the comment is more of a modern idea where no one is able to know anyone else, prioritising the individual over all. This is most common in identity politics today.
It's worse than nihilism and it also changes societies and people as it encourages and demands the rejection of understanding and empathy.