The post is off-topic, to me.
However, this is a community too, where moderators try to implement what people want this SE to be (which is usually: on-topic and free of poor content). If a bunch of people want to answer this, I think it's less harmful to make the rare exception and not cut this off. I'd rather have an SE that allows maybe one joke post here and there that entertains 27 people, weighed against what must honestly be a really minor inconvenience for anyone else. It should be a wiki, and I've made a few popular "What are the best X?" posts wikis if they had a lot of decent discussion. That's what has been done and I agree with it.
Do we need more moderators? yes please. I have never been clear how we even call an election. The post you cite, however, is evidence of mods doing the right thing. The other post you cite seemed to expect a mod to answer flags in less than a day, which is nice I guess but hardly fatal for an SE at this scale. A week? maybe. But yes we need more mods to share the load.
What is harmful, in comparison, is the tone of the post here and your comments. This is not a constructive way to tell someone a post is off-topic, even when that's objectively true. We don't want people here, let alone mods, doing that. I think Dawny33's replies and actions are patient and reasonable, but you veer into ad hominem when questioning whether this person is doing their job, contributing enough.
Stepping back, this simply is not a big enough deal to escalate like this, even if you disagree. I'd agree we need more mods, but we need mods who will handle it more like Dawny33, not what you seem to want to happen here.
Let's leave it open as a wiki as exceptional, enjoy it, ignore it, move on, and keep it clean and light here.