> There also seems to be an assumption on HN/Reddit that vocal activity on the internet, in any form — be that videos, blogging, podcasts, etc. — is proportional to activity behind the screen.
Personally, I dislike this attitude. I think the internet is a good signal for what will be in the streets in 2-4 years time unabated. The attitude OP reflects is one that was valid in the 90s and early 2000s, but not today.