I have the same feeling. But, my guess it that it’s not that those sites don’t exist. It’s more about finding these gems. Content-free sales pages have been search engine optimized the last years. So the SERPs are full of commercial shit. We need better exploration possibilities. That’s one of the reasons I love HN.
To be fair, based on my searches, "Get from x to y by train"-type searches tend to feature this site on the first page of results -- that's how I found it originally. So something in the Google algorithm clearly values this type of content-rich, no-frills site.