Going to be huge. This is the next major advancement. It will be an enormous disruption those and society is not ready for it.
As for the doomers, that isnt likely to happen (very low chance). It simply is not the path of technology.
There are a few singularities which will arise out of this, one being economic.
I very much agree with you, it will be like getting electricity, the internet and the industrial revolution all at once!
After watching how we've navigated social media over the past fifteen years or so, I do have some concerns if we are neurobiologically ready to handle it, but I am a total optimist about the future.
The economic possibilities and the coming epoch shift are gonna be something for sure!