My thinking about this is that people are both sellers of a product (their labor) and human beings. I think this is what got way too mixed up in the Marxist framing of socialism and needs to be unwound.

I don't think people should have rights qua producers. Acer doesn't have the right to have people buy their products, their purpose in our society to produce a good value proposition for computers. If nobody wants what's on offer, they can and should go out of business. Otherwise they're wasting resources that could have gone to their superior competitors. The same goes for a redundant worker.

But qua humans, I think people should have tons of rights! I think people should have equal opportunities (I'm thinking especially of children and how unfair life is to those with poor parents), and in addition, I honestly don't think someone should have to go hungry or homeless no matter what they do.

A basic income serves not to replace capitalism with socialism (in the Marxist sense) but to work in concert with capitalism to make sure nobody is ever dehumanized by a process that makes us all richer.