It is the most popular forum software used and you're right I didn't make it. Though the makers aren't even billionaires. There is no point me spending even a day trying to make similar software (it actually takes thousands of developers years to create) as it just wouldn't evolve as quick as this does. Every month there is a major update adding new features and fixing bugs.
The face it's complicated to browse though might be down to how old the forum is. Our much new
Amarok Forum | VW Amarok | International and Australian Amarok | Aus Amarok Forum | 4x4 Amarok | Volkswagen Amarok Startline, Trendline, Highline or
Extreme Sports Forum websites are much easier to navigate just due to the categories being clear to understand. tilersforums.com however has had umpteen categories add, moved and removed over the years and short of reorganising the whole forum and it's threads (which has recently been talked about to be honest) there's not much we can do.
Basically though if you're on the forum homepage, you'll find the most used forums at the top of the list. Click into any of those, and you find the list of threads related to that forum category. In most cases you could ignore the bottom half of the forum homepage as they're forums not used so much so have been shifted to there.