>Bend just serves as a useful example of my general point regarding vibe-coding as it is recent, high-profile, and has aspects that make it easy to use as an example. I don’t know anything about the author’s history with designing languages or if they actually did consider the tradeoffs below and made what I think is a poor choice

This doesn't make any sense, you're equivocating vibecoded as in "prompted by a clueless incompetent person" with vibecoded as in "implemented by an LLM". Former is used to make your point, later is used to defend the premise.