Don't judge someone's knowledge of bitcoin and bitcointalk from their ranks because there are lot of exceptions to explain the ranks is not actually determine everything, just go to the technical board where you see low ranked members who have more knowledge about how bitcoin things works than some random legendary posting in bounties or altcoin board.
Exactly mate we can not judge the book by its cover and also here in this forum we can not say that all high ranks are knowledgeable enough but as we saw there are many Hero members or even Legendary Members who still spamming or let's say shitposters. And not all newbies are literally newbies, many newbies have already experienced about bitcoin and have more knowledge and as we saw here in forum there are many newbies who contributed and make useful topics and replies.