"AI" generated code often has a number of styles in the same functions or modules. In an "AI" generated bash program I recently reviewed, the code had both "if [ testtesttest ]" and "if [[ testtesttest ]]" styles along with different styles of testing lexical equality.
It also had a globbing test I'd never seen before, something like "if [[ $X = *"string"* ]]". It works, but wow, ugly.
The new bash program looked old, like someone with a distinct set of preferences wrote it years ago and 2 or 3 maintainers had hacked on it, being less careful to keep a consistent style.
That sort of thing would be judged low quality legacy code 5 years ago. It's harder for a human to understand, and since it just might depend on a peculiarity of "=" vs "==" vs "-eq", people make minimum changes or maybe no change at all. That's one way "low quality" you seek is exhibited.