I completely agree with the sentiment, but i'm sure deals are made on less trivial factors all the time. They just aren't explicitly stated.

Yeah, but the whole point is that if it IS explicitly stated or even implied, then the whole concept of a VC's fiduciary duty to its investors gets thrown out the window because of some partner's personal biases that have no impact on a given company or product. That's unethical and dubious at best, and illegal or outright fraud at worst. All because someone didn't like that someone else was using a different kind of phone. That's nuts if you think about it.