This is a weird one, but there's been a definite shift in indie game development.

Before Steam Greenlight/Direct and Xbox Live Arcade/Marketplace and whatever, there wasn't a huge emphasis on trying to get money out of a game project. I'd speculate most indie (and modders) dev's goals at the time were to make stuff and hope it was cool enough to show to a studio as a portfolio piece and get hired, as self-publishing was rather difficult at the time.

A lot of conversation and discussion about game dev at the time was just trying out new things or learning how stuff worked and so it was a generally chill environment.

But after the success of things like Braid on the Xbox or Minecraft (when it first released) on the PC, there was a huge direction change into avoiding working for a big studio altogether and getting into self-publishing to make the big bucks. Now its generally considered strange to make something just to make something and not have a community or dev logs or self-promotion.

Its somewhat made me avoid some development communities and I find that kind of frustrating.