Those are a rare type. I know of two people who have done this and they're both friends of mine.What about “want to try a Quad Cortex so I can better point out its flaws”.
But really, these two particular guys are so loaded that buying something for $1500-$2500 is nothing to them and while I can call them friends, I can also certainly say that their purchasing of these items was done in a "Well, I'm putting my money where my mouth is, so that means my points are more true" kind of way, which was also known by everyone they were discussing/debating with because these particular people have kind of built a personality or character for themselves by the amount of gear they buy.
Of course, their opinions never change after. They'll generally concede that their biases were a little harsh but overall they were still right.
Really, I'm surprised more people don't bother with that and take advantage of wait lists and impatient buyers on Reverb. How's that for a double-banger; buy a product you already decided you don't like to bitch about it and then flip it for profit.