it is true that the warnings are more pronounced on the FAQ than when you enter the zone through the UI where it is still mentioned at the beginning and in bold: "for skilled avast users".
At the same time it's the snake that bites its own tail because - as you say - it's difficult to enter the interface without first going through the FAQ where the warnings are quite present.
No doubt if avast wanted to make this area more accessible (bypassing the FAQ) it would put the appropriate warnings before entering the area, but for now I think its policy is to target users who read the FAQs and who are generally fairly knowledgeable users and not "click-everywhere" users.
edit:On the other hand, I don't really believe that users who enter such a zone (like firefox's "about:config") bother to think 3 times
it's more to protect the software publisher
I would add that if avast wanted to make the interface more accessible, it would have to start by making it accessible in the language of the interface because as you can see from my capture
here, as far as I'm concerned it's rather translated into "franglais"