They genuinely believed they were going to change the world, drank too much of their own kool-aid and eventually ran out of money.

Pretty sure they feel terrible right now and I don't think they slept well for the past 6 months. Could someone reasonable see this coming before KS? Most likely yes. Would they get this far without taking big risks? Most likely no.

You feel angry you didn't get your pebbles, I feel angry I didn't get my two pebbles and a core.

Imagine how they feel - reportedly turned down $750 mil and less than a year later had to apply for a job at another struggling wearables manufacturer.