In my experience at least, there has not once been an instance where an LLM was able to find answers on Reddit more reliably than I could, and I've been using LLMs since before ChatGPT was even a thing. (though granted, most web-search compatible LLMs came later on)

I think it will probably be better than the average user, since a lot of people simply aren't that great at using search engines very effectively in the first place, but I wouldn't call the answers "practically impossible to find."

Just use a different search engine! Just because it's called "googling", does not mean you have to use Google.