Optimal destabilization conjecture for K-unstable log Fano pairs

Let $(X,D)$ be a log Fano pair. For a divisor $E$ over $X$, let $A_{X,D}(E)$ denote its log discrepancy and let $S_{X,D}(E)$ denote its expected vanishing order. The stability threshold is

$$\delta(X,D):=\inf_E \frac{A_{X,D}(E)}{S_{X,D}(E)}.$$

Optimal destabilization conjecture. If $(X,D)$ is a K-unstable log Fano pair, then there exists a divisor $E$ over $X$ computing the infimum:

$$\delta(X,D)=\frac{A_{X,D}(E)}{S_{X,D}(E)}.$$

This asserts that the stability threshold of every K-unstable log Fano pair is attained by a divisorial valuation, providing an optimal destabilizing divisor and implying that the corresponding normalized Futaki infimum is a minimum. The supplied context does not state whether the conjecture has been resolved.