This may not always be indicative of positive quality.
I could reduce the line count on many files and increase complexity and reduce maintainability.
It's the problem with optimising on metrics.
It seems unlikely that you would encounter someone who naturally reduced line counts while making code worse, but once it's being checked whether you're reducing line counts...
It would be great if there was a git command to check that. Now that would be HN worthy. I skimmed the rest of the article and it seems to be typical link bait list