No, I disagree. It's feature usage - or rather misusing it - that leads to "bad code". And that's even before we start talking about what is a "good" or "bad" code, which is OK to discuss on a high-level, but invariably leads to flame wars when it comes to details.
> I’m pretty certain such a thing exists for language design, too.
What I'm saying is that I didn't see this in action, ie. I found no obvious correlation between any single feature and good or bad language design, across all the languages I learned/investigated (EDIT: where the sample size is 40, also see below). Also, saying that a particular language design is "good" or "bad" is utterly meaningless: the only way of judging PL designs is on how well they suit to some purpose. Take a look at J or Forth - these are beautiful designs, yet you probably wouldn't want to use them to code a basic CRUD app.
> comparing penises by writing out numbers w/o any reference is silly at most.
My VPS hosting is dead for some reason, but you can see - incomplete, work in progress - list of those languages here: https://klibert.pl/articles/programming_langs.html (when it comes back EDIT: should be working now).
Also, thanks for assuming so much about my mentality from a simple comment; in reality I'm just happy and excited about my new side project, which happens to be about documenting my experience with various languages and their usefulness in polyglot setting.