The willingness to buy this CPU comes down to being an enthusiast. Enthusiasts can have enthusiasm about a vast amount of things including computer chips with various branding printed on them. My grandmother paid a few hundred dollars for a spoon once. A spoon for crying out loud!
There's a market for anything and everything. You couple that with 6+ billion individual people and thus, you have those who will buy this CPU. There's nothing wrong with it. In its most basic form it comes down to the particular interest that an individual has based upon their experiences in life.
It has nothing to do with saving money, getting better performance, what reviews say, what other enthusiasts say, forum posters, color of the sky, etc.
People need to think about these things before questioning someone else's decisions and passing judgment upon them. It is helpful to post things like relevant facts and figures to possibly help the discerning and willing to learn individual when necessary but it just doesn't make a difference to some. No one should have any feelings of anger, outrage, empathy, whatever due to what others do in regards to a CPU like this.