Not if it's only looking at the top search results. Those are very often terrible sources of information.
Something like searchQuery+=“ reddit” should do the trick.
I’ve never understood this meme - Reddit only works for product reviews, and only if you ignore astroturfing.
Who goes to Reddit for factual information? It’s definitely not Wikipedia, it’s more like an op-ed.
In the context of a search engine, single shot learning with the top search results should mitigate almost all hallucination.