> quite literally anything can be published
I've got a stack of rejected papers that beg to differ.
> Isn't the point that they serve as a basic filter for obvious noise?
Yeah, and obvious noise is usually rejected. But sometimes it is not so obvious what the noise is, and that's why the scientific process is bigger than the peer review system.
> Isn't the point that they serve as a basic filter for obvious noise?
Totally, there is a lot to fix about it. But if you really want to put your effort into changing the system, I don't think you should focus on peer review. Destroying the business model of journals is where I would start.