Agreed. Right-leaning libertarians strongly value the non-aggression principle. If the BI is to be funded via coercive means (e.g. income tax) it is morally impermissible and utterly incompatible.
However I don't doubt that some will accept it on a pragmatic basis, with the hope or expectation that it will lead to an overall reduction in violations of the NAP.
However I don't doubt that some will accept it on a pragmatic basis, with the hope or expectation that it will lead to an overall reduction in violations of the NAP.