[Laremere]

I was going to start reading the article, but the TL;DR dissuaded me. The article look to be a long one, and if I just committed to reading every long article on the internet I'd never get anything done. The beginning of the article should serve to get me interested and willing to invest the time to read the article, not as a snark remark to people who have already showed interest in your article by navigating to it. In the case that this is a reply to people asking for TL;DR on things you write: A tl;dr means that someone was interested in what you had to say enough to leave a comment. However you failed to show the worth of reading the article given the apparent size of it. You had the potential to get those who would start reading your article to see if it had value and told all of them to go waste their time.

[345laidar]

This is true. Not only does he come off as off-putting to his readers, he also seemingly is off-putting to the rest of society.

[krzyk]

On the contrary, the TL;DR encouraged me to read the article to the bottom. I don't get it why anyone (except the ones mentioned in this tl;dr) would be offended by this.