HN is not at all representative of the wider programming community. HN attracts a lot of people working for trendy startup companies and is very silicon valley centric, but that is a tiny portion of the programmers world wide who are much more likely to be working on a java project for a generic business than using the latest fad.

TIOBE has it's issues but as a rough guide to what the industry is actually using I think it's in the ballpark.