People need to stop reading so much crap and so many summaries, and learn to focus on reading a long article for 20min.
In reality, all this script does is make it easier for people to filter for what they want to read.
A tl;dr is nice to get an overview if it could be potentially of interest to me. I have no real desire to end up reading some SEO/internet marketing nonsense only because someone chose a sensational headline.
That's too the reason why I don't click on youtube video links I get from friends. The URLs are pretty much non-descriptive and the chance of ending up watching some 15year old trying to be japanese are too big. That and the long loading time of YT.