Yeah, the way in which it is dumb makes a huge difference no doubt, though I think you know what kind of dumb code I'm referring to.

The nice thing about writing readable, maintainable code is that there have been patterns and design principles which can be taught to nearly any programmer, where IQ is not a huge barrier.

For example, learning how to effectively apply SOLID principles is going to be a lot easier than debugging a legacy codebase horrendously riddled with the very anti-patterns and design flaws that SOLID was intended to prevent.

A larger barrier to writing readable code is willingness to do so, from what I have witnessed.