Every activity and product has a cost and contributes to waste. If I enjoy that food and pay for the cost then whats the problem? Are we suggesting it's virtuous for its own sake to have a lower standard of living?
The watch itself is already a phone substitute for many people and continuing to grow. Isn't wearing a small thing on the wrist better than a brick in your pocket?
Do you have any imagination about how form favors could advance or even be different?
I see that differently. Mathemticians often come into a field that's complex and filled with fudge factors and layers of engineering and make it clear and simple. See the history of electrical engineering in the 20th century.