It isn't just finance and economics, although I totally agree with you that they're especially bad. The forum has become too wide in scope and started attracting the usual online idiot horde that dominates all other sites already.

You can see this even in tech. Most of the commenters have been handed incredibly powerful database / IDE / computation tools which makes them think they're very smart to be playing around with it. What they don't realize is high level tools are not meant for people who want to understand the tooling. They are meant for users of the tools whose task is something else entirely. So you get folks who don't understand how a simple race condition would occur or something else very obvious to folks who have done a bit of low level programming, but they will hold forth on mutexes and locks as though they invented them.