Several weeks ago my son asked me why, when he searches FAQs, his question never appears in any of them. I told him he just asks the wrong questions. 
I've found the same thing over the years for different software. No matter what question I had about them, there was never anything remotely related to the question I had.
You are right though. The vast majority of people will never so much as look at a FAQ, or any guide for that matter, unless it is a last resort. Even then, they'd rather ask the question and hope for someone to give them the answer. That requires less effort on their part. Even if the answer was flashing in a sidebar, they'd ignore it thinking it was an ad.
All said and done, having anup-to-date, indexed FAQ is vast improvement over some of those sitting out there in cyberspace.
Just asked 11 hours ago:
How to renew a certificate?
In this topic this question was asked and should be listed the FAQ.
- Could you point me to a link containing instructions to automate the next renewals? (for Windows Server 2019 on Google Cloud)