Using the example above, you get $25,000 in stock every 3 months. So the number of shares are variable, so the price is irrelevant to you. If you sell as soon as you get it, it's the same as $25k cash, e.g. completely divorced from the stock price.

If it was tied to the stock price, like every other RSU program on the planet, you'd get x number of shares. So as stock price goes up, your compensation goes up. Your compensation is tied to the stock price.