They look nothing alike except they are both about shaders.

Could you explain why you think this is a slopfork?

Did you try the shader.com shader editor where you stack shaders and effects in layers? V similar approach!

so does Photoshop and thousand other visual editing tools. Hardly a reason to claim it to be a copy. Also "slopfork" seems harsh considering it seems limited, but well designed imo.

Maybe a little harsh yes. But compare these screenshots of the two products/features

https://imgur.com/a/41BybD1

I see a deep tree and a shallow tree in the two screenshots, representative of entirely different approaches.

What would it take for you to ever admit that you are wrong.