I would say that, whatever the rights and/or wrongs of the particular instance, don’t bother. Quora Inc won’t be moved, and in fact will likely dig their heels in to prove the point that their decision is final.
If there is a glimmer of hope of anyone being restored, it’s through their own appeal to the mods that this is some kind of error. And they’d need reasonable evidence.
You can’t reason with Moderation on their behalf. Especially if (perish the thought!) Moderation happen to be right.