The generalised Taubes conjecture for singular loci of circle-action quotients

Let $X$ be a symplectic 4-manifold admitting a non-trivial fixed point free circle action, with quotient orbifold $M$. Let $L$ be the (possibly empty) singular locus of $M$. A link is meridionally fibered if its complement fibers over $S^1$ with boundary fibers having meridional slope.

Generalised Taubes conjecture. The singular locus $L$ is a meridionally fibered link.

This conjecture connects symplectic structures on 4-manifolds with fixed point free circle actions to the Thurston norm and fibered classes of the quotient orbifold. The supplied text gives a positive answer via the preceding theorem, so the conjecture is solved.