I like a line length rule because I use an editor that can show me multiple files side-by-side, and keeping things to a certain length ensures that I can productively do that.

And my terminal happens to be around 240 characters wide for the font size I use and the size of my laptop's screen, which means if I limit to 80 characters or less I can snugly fit three files, or if I set to 100 I can get two with some breathing room.

Plus, if a line really is going over those lengths, then it's often a code smell: maybe I've got code that's too complex and ending up deeply-nested, or maybe I've got functions or methods taking way too many arguments, and hitting a line-length rule will warn me about that.

Why are you being so dismissive? It seems like you are making this into some kind of contest to see who has bigger problems.

I am just being honest, and I think I am being helpful because other people will also react negatively to the way the documentation is written. I support the project and want it to be successful, providing feedback like this achieves progress towards that goal, in my estimation.