Arguable a social class system in a dPoS consensus favors majority stakeholder in creating their narratives?

In a sense, yes, though that is not an advertised feature of proof of brain. The image of proof of brain being only a demonstration of 'good' ideas all done in 'good' faith is a bit naive.

This is why i appreciate people who really write what their feel regardless of what anyone thinks. Because then i can truly relate to them if it resonates with me

Absolutely, yes, this is essential to a healthy society.

It would be a lie if the majority isn't somewhat compelled to be admired by whales and adhere the content they publish to their liking?

That is definitely in some people's minds, but I think it's not really necessary as long as writers align their thinking partially towards community topics and helping the community thrive. If people address this aspect of Hive and do it well then they will naturally draw the attention of larger stakeholders.

Apart from monetary motivations / value incentives, isn't it clear and obvious that so many of us have alterier motives that aren't related to temporary gratification?

Yes, we do, and that's all a key part of being who we are - it's what makes a social space thrive!