They say:
this is absurdly expensive when the price for pretty much every other similar app is zero
They mean:
I’m too stingy to pay for the works of others
They say:
I’d also have to convince other people its worth paying that much since I want a community.
They mean:
I want other people to invest the time to learn it, write blog posts and answer my questions.
Just a normal day on Hackernews.