"You can vibe this" means getting an LLM to create it, not writing the code yourself. That's what people mean when they use the term "vibe coding" (or just "vibing" in their comment).

Though vibe coding doesn't prohibit the human from making the decision on which weather API to use, so of all the criticisms to make about LLM use I don't actually agree with the person you replied to who suggested it has to mean "accepting any random LLM suggestion for a random endpoint".