This smartwatch isn't really all that smart by today's standards.
I would really miss the mod cons I have on my current smartwatch. Payments over NFC, dual-band GPS tracking, 4G LTE connectivity. The Pebble (and repebble) trades all that in for a multi-week battery life. But the minor hassle of once-every-two-days charging on my galaxy watch really isn't enough to forego all these powerful features for me.
I too would miss GPS, BUT I've still never found anything that really fills the pebble shaped hole in my life. My Garmin compromises the other stuff (battery, widgets, calendar, display readability etc.).
Everything is a trade off.
I'd add that it also ignores that Garmin already has multi-week battery life with most of these features and more. The only thing they don't have is 4G yet, but I believe next year's devices have been reported to have it.
The battery life alone suggests otherwise.
It is for me, I don't care about any of those features. I just want a watch I can customize a bit that gets notifications and can do rudimentary heart rate monitoring. If I have to charge it more than once a week I won't wear it.
Conversely, I don't care about any of those features, and I do care about long battery life. It's great that different devices catering to different users exist. I don't think the fact that they are aiming at different users from you makes it "not smart", it just makes it not suitable for your use.