The problem comes when "creating" more bees becomes too expensive/difficult, and you can no longer afford it.
In HN terms: a little cash infusion can make everything look great... until it runs out.
Edit: this comment does a much better job of using HN terms: https://news.ycombinator.com/item?id=10024771
Since the colonies are still collapsing without explanation, a modicum of pessimism might be understandable, even if it isn't completely justifiable.
Anyway, I think these analogies fail because they keep talking about investors, where you're supposed to be spending money up front for a great return later on. If you're spending more and more money to maintain the same future return then you're in trouble. But things like money spent on bees and honey prices are just straightforward money-for-product transactions.