My Fitbit Versa 3 has a week long battery life, can do Google/ Alexa Assistant, Google Maps, Spotify, GPS, health montoring, voice response to text messages although it does use its own Pay system. I think what they mean is that Samsung and Apple don't have watches with comparable battery life.
I would still switch back to my Pebble if they made it again.
But they have real hands, and the 'smart' part is subtle enough that most people just see a watch, a couple weeks battery is realistic as well.
Pebble hit a sweet spot in terms of how much you can do with it, while being good looking with a hardy battery. If we limit the comparison to the last two of those things, Withings is in the lead, not to mention still actively sold and supported.
Also, maybe a customer will remember the sporty watch contrasting with the formal suit, and call you instead of a competitor.
Also, Zuckerberg wears t-shirts and jeans.