The idea of Windows UI/UX designers having macbooks is so absurd to me it's hilarious
The more painful it is to eat your own dogfood, the more it's necessary to do so. But it has to be mandated from the top down.
If the only people with the power to actually change the product aren't even using it, the god-awful UI/UX decisions in the latest version of Windows begin to make sense.
How on earth could you ever pretend to do you job well without using the product you're designing?
(Okay, I can imagine it; it's actually pretty funny.)