No, their point is valid. You just did a bunch of mathematics while completely ignoring the larger issue of corporations and rich executives wasting money on frivolous endeavors.
Not only that, you literally suggested that dividing the BlueJeans money among the poor of the world would do them little benefit–as if Verizon is the only company perpetrating corporate greed–which they never suggested.
Using your own numbers, $3415 dollars would probably make a huge difference in most Verizon employees’ lives, but instead they spent that money on BlueJeans, a product that any reasonable person could have told you was doomed to fail.