Seems very weird to me. Where's the difference between me using a Photoshop plugin that generates some parts of the image and me using Stable Diffusion that gen

Seems very weird to me. Where's the difference between me using a Photoshop plugin that generates some parts of the image and me using Stable Diffusion that generates some parts of the image? How do you know how much of the image was generated and how much was created by my own hand in Photoshop? What if I have Stable Diffusion as Photoshop plugin?