Saw you are trying it out. Awesome! Sorry the documentation is a bit weak right now, we had people wanting it so we got it out, rather than getting all the docs complete.
The noun phrases part of the response gave a concise list of things, including the word thing(hijacked, NLP thread, stuff, My NLP, thing, Drakaal, cooler, heuristics, Just). That's maybe good at picking out the nouns, but it's not really actionable yet. It might be great as the bag of words to use for trying to classify something, but by itself the best it's giving me is NLP/heuristics if I had the concepts grouped together, somehow. I think that's a reasonable takeaway from your example, but I'd be curious what your thoughts are on it.
PS. I tried the TLDR API on a copy and paste of the original article with commas, periods, and single and double quotes removed but it returned a 500 error. I'm probably doing something wrong, but I'd love to see what it spits out if you can help me out.
One of the API's takes a URL, one takes plaintext or HTML, not sure which one you hit, but the TLDRStuff.com will make it really easy for you to play.