The paper does not say that if the singularity hypothesis is false, we should not worry about reformulations of the Bostrom-Yudkowksy argument which rely only on orthogonality and instrumental convergence. Those are separate arguments and would require separate treatment.
The paper lists three ways in which the falsity of the singularity hypothesis would make those arguments more difficult to construct (Section 6.2). It is possible to accept that losing the singularity hypothesis would make the Bostrom-Yudkowsky argument more difficult to push without taking a stance on whether this more difficult effort can be done.
Thanks for your engagement!
The paper does not say that if the singularity hypothesis is false, we should not worry about reformulations of the Bostrom-Yudkowksy argument which rely only on orthogonality and instrumental convergence. Those are separate arguments and would require separate treatment.
The paper lists three ways in which the falsity of the singularity hypothesis would make those arguments more difficult to construct (Section 6.2). It is possible to accept that losing the singularity hypothesis would make the Bostrom-Yudkowsky argument more difficult to push without taking a stance on whether this more difficult effort can be done.