That would be a useless site, but that's not how I read it. I understand it as "this is not that Google thinks your account is a bot, it's that this request might be made by a bot. And since you didn't use this site as a normal website, it also doesn't score your type of traffic, just this one request". You might be right, but it really does seem to be doing a request to their API.
Documenting requests' format and their return values is documentation and doesn't require an interactive site that looks totally real and makes you expect a real (rather than a dummy) answer. Which is not to say it's impossible, but it would be weird/unlikely. Usually when there is an example api request in documentation, it's a real (live) request, too, and this isn't even a documentation page.
>the score returned here is not a reflection on your Google account or type of traffic
I got random scores as well. It looks like this is just a sample of the data structure that the service returns, not the actual score.