I think the second point is a bit problematic. That might depend on the type of debt you’re considering. But limiting my comment to purely financial, and especially documented, debt then I don’t think Bob has any actual incentive here. Why? Even if Alice is removed the ownership of the loan and the right to repayment transfer to the estate and heirs. So Bob’s position doesn’t change.
I think the second point is a bit problematic. That might depend on the type of debt you’re considering. But limiting my comment to purely financial, and especially documented, debt then I don’t think Bob has any actual incentive here. Why? Even if Alice is removed the ownership of the loan and the right to repayment transfer to the estate and heirs. So Bob’s position doesn’t change.