Whereas I have seen too-smart people creating bugs by cramming things into one line because the brevity required means you end up with hard-to-visually-parse clusters of brackets, braces, and whatever other punctuation your chosen language allows (is that a minus operator, is it negating a value, or is it a range in a regex?).

Bugs are correlated to line count because code complexity drives line count and bug count.

It’s not the number of lines of code causing the bugs, it’s the complexity of the problem causing the number of lines and number of bugs to grow independently of each other.

Correlation does not imply causation.