I dunno, ending with a short, punchy insight is a common way to make an impactful conclusion. It's the equivalent of a "hook" for concluding an article instead of opening. I do it often and see others (e.g. OpEds) use that tactic all the time.

I think we're getting into reverse slop discrimination territory now. LLMs have been trained on so much of what we consider "good writing", that actual good writing is now attributed by default to LLMs.