Well if you get that many notifications, I'd just start ignoring them / turning them off. Too much noise, too much distraction. Plus, it's probably not important / something one needs to respond immediately to.
It's not noise though. For me a smartwatch would replace a radio. With a radio you can easily pass a handful of messages back and forth every minute with low overhead, but with a smartphone that many messages becomes a burden. With a smart watch it's not a burden.