The crux of my argument is relying on methodologies to write good software or to guide a design is pointless.

I already got that. It's already in the title of your post. You're just restating the title again.

But in the body of the text, you gave your reasoning and arguments attempting to explain why it was pointless. I'm pointing out that your reasoning (e.g. "different definitions") does not support your title. You need to construct a better set of arguments to convince people of your thesis.