But how do they know it's vibe-coded? It may have a smell to it. But the author might not know it for a fact. The fact it's vibe-coded is actually irrelevant the size of the request is the main issue.
I'm not gonna make assumptions on behalf of OP, but if you have domain knowledge, you can quickly tell when a PR is vibe-coded. In a real world scenario, it would be pretty rare for someone to generate this much code in a single PR.
And if they did in fact spend 6 months painstakingly building it, it wouldn't hurt to break it down into multiple PRs. There is just so much room for error reviewing such a giant PR.
