They likely knew he was actively wielding bladed weapons.
I watched the full video. They were repeatedly told he didn’t have any weapons. The clinician just said the man was violent and kicked him.
I have no idea why they didn’t use less than lethal first, they talk about it but I don’t know which officer was tasked with it. It seems like they didn’t expect him to be armed when they entered.
It’s even worse, the 12 mile range is the explorer model for $599.
The commuter model is more like 6 miles max range.