Too little too late, had google launched plus at the time it might have had a chance but buzz was too weak to be a real competitor to facebook at that stage, and plus was waaaay too late and to make matters worse google made it uncool by pushing it to existing youtube users.
Not really, siri and all the other voice assistants have to be the biggest marketing success in years that nobody cares about anymore. Why success and not flop then? because everyone rushed to get one, and several startups all over the world popped out to offer an alternative.
But nobody uses it, its cumbersome, it barely works most of the time for the kind of complex tasks its supposed to help you out with and only really works with really basic stuff like reminders and alarms which you can set up in a sec without disclosing your schedule to everyone around you.
Also the AI sucks, its ironic that its textbots that are actually doing what siri and its many "brothers" were supposed to.
I can see why they hired those ITsec experts but the designer one I'm actually surprised. The demos on his channels don't look that well made tbh and the concept themselves are mere tweaks, its funny that of all the concepts for apple products out there apple hired this guy.