As you elucidate in your first point people can choose with their wallet. However, I think that blog posts and complaints are another, perhaps stronger, way of impacting change. People may still like a product, they may still want to buy a product, so a complaint is the only signal which can let a company know how to improve.

It’s unfortunate that you are getting sneered at for liking the keyboard though. It’s step too far when the complaint targets other users who enjoy the product and doesn’t focus on the product itself.