Well, since it's closer now, and my previous argument mostly focused on an emotional urge to be forgiving, I will instead offer a practical stance in favor of Charmander's return, related to the question I answered previously.
Honest question, what is the point of him returning if he is completely able to just create a new alt account without anyone finding out, and when they do, they just create another?
So my main question is, what would the point of him returning to his main even do, if he can already access the site?
Because him being able to return on his main account gives him the chance to redeem himself, while him returning on an alt only solidifies our mistrust.
From the perspective of basic human psychology, I think it is greatly beneficial to us if our incentives match our desired outcomes.
Our desired outcome is to have reasonable people who debate within our rules and not to have people evade bans with alts.
If someone, even after being banned for an entire year, is still this interested in the wiki, it seems extremely likely to me that denying their appeal would lead them to making alts and trying to evade their ban, because we will effectively be telling them that if they want any hope of ever participating again it is their only option.
And I don't think this is a decision which can't be reached by a moral person. If they consider themselves reformed, they can argue they only plan on doing good things with this alt, and that they'd be helping us without us even knowing it, and since they have no chance to appeal it's their only way to do so.
Instead, if we set a precedent that someone who has served significant punishment, and is still interested and polite about it, can have another chance to participate normally, we incentivize them to simply wait a reasonable time then come back as a normal member without deception which we can monitor more easily, rather than setting the precedent that a permanent ban is probably final and your only hope to ever participate again, regardless of personal growth, is to break the rules.
Therefore, I think giving Charmander another chance is a reasonable way to generally encourage reform and honesty as opposed to deception.