You are probably right, and your number of followers shows that you are doing the right thing with your audience.
It's all about time management, and how many hours you can really sacrifice to engage and consume other people's content too.
You're on point too about narcissism but I would add that anyone accepting to be on camera is a tad narcissistic in the first place...But I digress a little :P

I think having children, a day job, not much money, could be the reason why some people don't engage as much.They just don't have the luxury, need to go back to the daily grinding.
Some of them don't even have constant access to internet.
The truth is very few people have the time to chat, you need to be either rich or retired (or dedicate your life to content creation)
:) I noticed as well, that just chatting with someone while you should be working and make money can become a source of guilt especially when you have a limited time frame. Which is ironic because interacting with their audience would increase their value, but it's often difficult to see long term goals.

I hope I was respectful(enough) in my comment, have a nice day bro :) I think you're doing great!

EDIT:

I realized that your video is valid for content creator like me specifically and the ecosystem of Steemit is so vast so everyone have a different ball game in it.
But If I can take something away from this, is that consuming someone else's content is as valuable as producing content, in symbiosis as you said.