I've struggled through some absolutely awful documentation over the years. I'll put up with incredibly broken English and other problems as long as the accuracy is there. Just last week I encountered a pinout diagram that used emojis to indicate which pins related to which data channel. Not a choice I would have made, and I found it made the diagram harder to read. But it was accurate - I wired it up per the diagram and everything worked as intended.

Documentation lacking accuracy is useless. It can be the most readable thing ever produced, but if it describes a different thing than what was intended to be documented, it's trash. Documentation that is hard to read but is accurate still has value.

Regarding "follow up the document with a lot of support" - did you catch the part of the anecdote where the author is having to deal with support requests because of the inaccuracies?