ssh is not a simple tool, it just started out as a simple tool. And, it occupies a key role, for better or for worse, as the base layer for secure communications in a unix environment (and beyond).

Combine those two facts, and it's not surprising how many articles there are explaining the ins and outs of ssh.

I've been poring over unix man pages for about 25 years, and we all know their terseness is a delight and a frustration. ("Sharp and newline surround comments." -- takes a minute to parse.) These articles are trying to add words to address the frustration part.