I totally get what you are saying. By pure luck @Ned resteemed my introduction post and I made a lot of rewards! I thought to myself "wow, if every post earns like this I could early retire!!". It laso helped that two of my friends, @Luzcypher and @Lizanomadsoul helped me me in my introduction.
But it doesn´t work like that, like you, my second and third post got the real rewards every minnow like us gets when starting and yes, I had to read a lot about post composition, writing tips, A LOT of Steemit policies like plagiarize and giving credit or "how to center or bold content" etc.
I think you are doing the correct thing, we should all stick to the content we like and know about, eventually more people will come (and if we greet them correctly and engage with them making them wanting to stay) then every subject will have their own sub-community and every topic will have the rewards we all want :D
I'm with you. following... sub groups... like minded... it'll happen. As long as there isn't some technical disaster... Steem is so perfectly microcosm.... It's alive...