That's an interesting thesis and 'feels' true, but I have a hard time reconciling HN's (seeming) indie ethos with it's cryptoskepticism if that's the overriding factor. Have you any theories to explain the seeming disconnect?
I think many of the more "indie communities" are now assembling in Discord, subreddits, etc.
I'm also somewhat surprised at the extreme crypto hate on HN, but I'd attribute that to demographics. I do think that quite a large number of HN users are middle-aged Americans significantly above middle class. They probably started using it when they were early 20s interested in tech/startups and YC, which means they're now ~35-40 and have probably made a decent amount of money in tech. And that demographic doesn't really benefit from crypto for the reasons above...