Razer Wolverine V2 M1-6 buttons are not usable as separate buttons but absolutely should be.
TL;DR The extra buttons should be mappable and they literally show up as unique controller buttons in Windows.
Let me start by saying I absolutely love Razer products. Every one I own is built like a tank and works perfectly at a reasonable price. In my experience, hardly any other peripheral manufacturer delivers good after great products like they do, especially at the bottom tier of their product lines. Sure, other manufacturers make great products too, but Razer's consistency and quality is unparalleled in my personal opinion. That is why a severe lapse in judgement like this is just mind-boggling from them. They may not always make perfect software but honestly its a far cry from some of the other configuration utilities I've used at times (looking at you software that rhymes with "Lie-Glue".) (Not sure if I'm allowed to mention them here and also that's kinda fitting you gotta admit.) Now onto the baffling issue at hand.
The extra buttons on the Wolverine are exposed to Window