The only criticism I have of Indie Hackers is that sometimes discussion can get a little spammy (lots of people looking for early adopters). Not every conversation is like that, but some posts are.
As someone building a startup on their own (full time) I've found Indie Hackers a really supportive community. The stories there are often relatable, and far less sensational than typically seen places like HN. If you're going through the daily grind of trying to grow a small business / startup then it's a good place to drop by every now and again to help stay sane.
They just care it provides the value they're looking for.
But I wanted a community for devs that want to become entrepreneurs and not for random dudes that want to make money at all costs.
Some people like me, that have the same problems, some people I coule relate to.
"How I [risked everything, failed big, quit job] and built a [moderately big number]/month business"