Imagine going to an art and crafts show in your local area- just any arts and crafts show.
There's going to be hundreds of vendors selling all kinds of things- from amateur to professional. How many of those vendors are actually selling something you're going to buy? Very very very few, if any. You may pick up something that looks cool and say "Hey, this is neat" but it doesn't mean you're going to buy it. It's a good allegory for this website and bandcamp and basically all websites full of music/art/choices- how many times have you actually BOUGHT something? If we don't like it, we have the choice to move on. We also have the choice to pick WHAT we like. That's kind of great!
What is being proposed, in part, is that we make the craft show ONLY display the 5 vendors from which we want to buy and that quantity, in this case, is not to the community's advantage. The thing is... we can't rent a venue, find space, or even really have a craft show without all of those other vendors, even if they are selling poorly crafted birdhouses and lanyards. The mere fact that there is so much stuff out there should provide bigger audiences for the music... and therefore allow our allegorical craft show to rent a giant space rather than a tiny, specialized one.
TL;DR. With this board comes all levels of talent, from beginners to pros. I think that cultivates a community. I think that's a really positive thing! Is it really all that bad that people are really into making chiptunes and trying to put their work out there? I like it. It's inspiring to see people trying. And if we don't like their work, we don't like their work. It's that simple. There's no anger or frustration about it. Listen to what you like to listen to.