This reply is obviously generated by an AI. You can tell from the fact that the summary is shit (you're better off reading the abstract of the article), and that it was posted 2 minutes after the link. There is no way a human can read the article in two minutes (just typing the 140 words in the comment would take must people over 1 minute).
edit: I realize now that the commenter was the same user that submitted the link, so maybe they're not a bot and they simply pre-prepared their comment. Still, I think the summary was quite bad, and it's also unneeded, since the posted article has a perfectly serviceable abstract right at the top.
Just let your submission speak for itself! Providing a tl;dr as a first comment just encourages people to comment without reading the actual article.