I allow for making specific provisions for this. I'm not arguing that you'd never want to subsidize labor, just that you 1) want to recognize that below-subsidence wages are a subsidy to business, and 2) that when you make exceptions, they're specific and for enterprises which provide net benefits.
A highly profitable company with high levels of negative externalities? Not so much.
The labor-export challenge is another issue which also should be addressed. I'd like to see, expecially, labor conditions (e.g., prison labor) and environmental impacts addressed through tariffs or other trade requirements, though international trade laws put (IMO harmful) limitations on this.
I don't think that minimum wage + basic income are mutually exclusive. I'm just highlighting what the actual dynamics of sub-minimum wages are.