This isn't rocket science, Mrs Kangaroo. Clothes disintegrate gradually with wear, which is why you get filters full of lint even if no socks go missing, and you usually throw clothes out long before they achieve the state of amorphous rags, let alone loose fiber.
Pluggers wonder idly at the mysteries of the clothes dryer. The rest of us use our hands and eyes and brains to try to figure stuff out, and reserve our wonder for the things that seem wondrous.
Your humble critic's plugger status: Never further from