I mean, garage door remotes cost $5, the battery lasts for years, and all you do is press one button. I just can't see why you would want to make a voice-activated garage door remote.
(Integrating it into a phone is slightly more compelling)
In the case of this house specifically, most people walk/bike rather than drive, and walking around with a garage opener in your pocket isn't as nice as talking into your headphones.
