I think that sufficiently universally trusted arbiters may be very hard to find, but Alice can also refrain from that option to prevent the issue gaining more public attention, believing more attention or attention of various groups to be harmful. I can imagine cases, where more credible people (Carols) saying they are convinced that e.g. “it is really easily doable” would disproportionally give more incentives for misuse than defense (by the groups the information reaches, the reliability signals those groups accept etc).
I think that sufficiently universally trusted arbiters may be very hard to find, but Alice can also refrain from that option to prevent the issue gaining more public attention, believing more attention or attention of various groups to be harmful. I can imagine cases, where more credible people (Carols) saying they are convinced that e.g. “it is really easily doable” would disproportionally give more incentives for misuse than defense (by the groups the information reaches, the reliability signals those groups accept etc).