Uniform stable commutator length conjecture for arithmetic hyperbolic manifolds

Let $M$ be an arithmetic hyperbolic $n$-manifold, let $a\in\pi_1(M)\setminus\{\operatorname{id}\}$ be non-parabolic, and let $\operatorname{scl}(a)$ denote the stable commutator length of $a$.

Uniform stable commutator length conjecture. For each $n$ there is a constant $C(n)>0$ such that, for every arithmetic hyperbolic $n$-manifold $M$ and every non-parabolic $a\in\pi_1(M)\setminus\{\operatorname{id}\}$,

$$\operatorname{scl}(a)\ge C(n).$$

This strengthens the preceding uniform lower-bound conjecture by formulating it in terms of stable commutator length. The source gives no evidence of a resolution.