I'm going to spend way too long writing this but this is how I see it.
Indefinite bans, aside from exceptional circumstances, are public. An admin makes a post and displays most of the major offences a player has committed as well as other evidence. The entire community is able to vote on whether or not the player will be banned or not in a thread that is live on the forums for days.
And the same applies to an appeal. Since the community voted for the player to be banned, the community can also vote to remove that ban in the case that the player appeals if the community feel the player has been genuine enough to deserve being allowed back in.
But many, if not most daybans involve just one person in the decision making process - the admin in question. (there are a few exceptions like chat offences where multiple staff members and even a few operators would have seen enough evidence to cast a judgement on a ban though).
So there's only going to be a handful of people at the very most who would have seen enough about a dayban to be able to cast a vote on an appeal. And not everyone is going to vote all of the time.
So yeah, basically because the decision to ban is made by one admin I feel it's only right for that admin to be the only one who can decide the outcome of an appeal for that ban - and I personally prefer if dayban appeals were only used in the case of possible misunderstanding rather than 'yeah I did it im sorry'
And my final point was summed up in the most recent ban appeal - a player appealed almost instantly following their ban and the community (including myself lmao) casted their votes. But the ban ended up expiring before a significant number of people could vote. So.. what's the point in the voting?