I'm one of those old Members who're now has enough merits to rank up to Legendary. It's possible, but you need to work hard (if that's your only goal here). If not, then just enjoy your stay.
In my opinion, this is a problem with the merit system. People are incentive to post there because it is easy to get merits there, and it is not a session where there are bitcoin or cryptocurrency related discussions, which is the focus of the forum.
I don't think it is a problem. Merit exist to appreciate good posters, not exclusive for tech guys. And getting merit there is not as easy as it sounds.