I actually think universal basic income is a very flawed idea from a leftist perspective.
It is effectively a capitalist compromise that still puts all of the asset holders in immense positions of power. The only difference now is they effectively are governmentally enforced as those positions of power. It will make the wealth disparity exponentially worse.
The answer to our wealth disparity is to put power in the hands of the average person.
Once capitalism is dead.
Technology is great, it's just naturally being used to exploit.