Having been in the sporting goods business, other businesses, time to study opinions on the internet, there sometimes is no rational reason why people switch products.

I haven't used the specific product mentioned, but it's been around too long, for too many people not to have used the broadhead successfully.
Of course, there are the inexperienced newbies and those who never quite measure up as an accurate shooter or user of the broadheads.
I've used only two kinds of broadheads in the last fifteen years. I never blamed one broadhead. It was my job to shoot correctly. It was my job to put the broadheads on the arrow correctly. It was my hob to make sure they were sharp enough.

Unfortunately we see some product change, simply because the fault lied with the product; never, never with the user.

I have a feeling too many just put the broadhead on the arrow, and don't take one minute to learn how they are suppose to operate correctly. I know from my studying my broadhead, I could have "fouled" up broadheads I was using, before I took them hunting. It's not always the fault of the braindead product but sometimes the braindead user.

I have no clue when to switch products. But there has to be a good market for those switching three, four, five and more broadheads in their career. You see, for some, the product is always wrong.