Alexa is a great voice assistant. Even so, it must be recognized that it is not perfect either and there are aspects that can be improved, but compared to the rest of the proposals it is the one that comes closest to that idea of perfection that most users have.
Neither Google Assistant nor Siri come close to the ability it offers to understand natural expressions, nor in speed and agility when responding or performing actions, much less in support of connected devices.
1776