Because your comment is not contributing. Linksys produces and advertises a "best of the best" router with inbuilt alternative NAS feature that not only is so

Because your comment is not contributing. Linksys produces and advertises a "best of the best" router with inbuilt alternative NAS feature that not only is so poorly maintained that it's insecure but also unusable by modern OS. Some people find that appalling because they want a basic NAS without breaking the bank and more "stuff" lying around, expecting a high end router to cheaply fill that gap. Some other people will find it appalling because it shows how little Linksys actually cares about the product and security as a whole.