[mapgrep]

A "TLDR" is written by someone who HAS read something for the benefit of those who haven't. Thus, TLDL, when followed by an explanation (as in this case) is implied to be written by someone who HAS listened.

(Note that there is a difference between posting "TLDR." to mean "I have not read this" and posting a "TLDR:" or "TLDR;", which means "I have read this long thing, and am trying to be helpful." It is, understandably, a confusing distinction.)

[vacri]

tldr is 'too long, didn't listen', not 'too long, don't listen'. It means that the person didn't finish reading it, not that they're exhorting you do not read it. Some people even put tldr summaries at the end of their own longwinded passages