I've read (or not read as it is in some cases) some really bad and/or really convoluted documentation.
Some industry standard tools, like Jackson, don't even have documentation but instead point you to various tutorials that are written by others on how to use it: https://github.com/FasterXML/jackson-docs
One of the nice things that LLMs have done is taken some of that mess of missing/poor/convoluted/scattered-to-the-winds documentation and distilled it into something accessible enough that you either get a useful answer or get a useful direction on how to narrow your search for the answer.
I think "read the docs" is good advice; but even the article itself doesn't go so far as to say *all* documentation is good.