Wow. This is really great as you really nail the point.
It is true like you said majority of people joining steemit are just for the reward system i.e the monetary system and also it has caused greed like you said. But i am not surpise to see the greed because normally, money sometimes causes greed among individual.
Like you just said. Mass posting is now common among this steemit platform.
It is better to post 2 quality post per day which will add knowledge to the community than posting 10-15 post just to make some reward whereas the post is not quality enough.

So we should try posting quality post and content that will add value and knowledge to the community.

Thank you for sharing this great write up with us