The author clearly understood this part of the topic and agrees. There are multiple reasons that software is slow.

As you imply, some of them are not because spending time on optimization seems relatively expensive compared to value. But some of them are.

The title is a disservice to the author’s point of view, then, because the article also reads as a “look what agents can do to optimize a toy problem” blog post.

Maybe the author should be a bit more careful about what titles they give their blog posts, lest they be misinterpreted by mere mortals such as myself.