There's actually a good deal that can be said about just how stupid it is to allow auction advertisements in raffles, and many of them you've listed nicely above. The fact that all other forms of advertisement, including things such as puzzle raffles in addition to normal trading, not only makes allowing auction advertisements illogical but completely hypocritical.
The reason for Jesse's poll ending with auctions being favored 2:1 (made a comment regarding that in that particular raffle) is that there tends to be 2-3x more open auctions at any given time than there are raffles (as of writing this, there are 345 auctions and 118 raffles). If it's simply to a game of numbers, auctions being favoured would almost always win, considering the vast majority of users only do things in their own self-interest, hence people wanting to make cheap advertisements for their own benefit in addition to simply joining raffles in a huge spree. If it was a decision given to the more regular rafflers of the site, I'm positive that the vote would've shifted in the other favor. And this brings me to the most basic of points...
Raffles are made for generosity.
Yeah, simple enough really. The point of raffling is to share with the world your items, your ideas, your thoughts and work, your own personal agenda. That sort of thing. It's out of an act of your own willingness and generosity that makes raffles what they are. By allowing auction advertisements, that idea is thrown out the window. Into a moving train. And its corpse is flattened and dropped off half a mile away and is rotting somewhere in the woods. Advertisements are simply a tool for personal gain, not generosity. It completely destroys the whole reasoning for raffling in the first place. Take into consideration that someone is capable of not only using dirt-cheap items in comparison to what they're advertising, they're also capable of spamming these raffles out for as much as their daily raffle limit allows, ultimately ending up with possibly dozens of raffles from only a single individual for the topic of a single auction.
And before someone notes that "sharing your art is the same thing", no it isn't. This is not the same as someone showing some art they've made, a video they've done, or anything of the likes, as that's sharing it for others' enjoyment, appreciation, or feedback. Asking for people to subscribe to you for said video or ask for art commissions, however, would be a form of personal gain, and that is banned. So why auction advertisements, something else that fits under the same exact principle as asking for subs or anything of the likes, aren't also banned, I don't even know.
So yes, as someone who makes a lot of raffles and auctions, I'd prefer if auction advertisements were removed. They're annoying, waste room, and in the words of Austin from ShoddyCast, they just make no goddamn sense.
They could just be removed and that'd be that, but I'd imagine people complaining about "not being able to find your particular auction". If a person is patient, they would scroll through and briefly look at every auction page, which admittedly doesn't take much time. But a better way to implement such a thing would most likely be a better form of auction searching or sorting. That just brings into the issue of how to do that for the various categories (probably by the separation through value) and whether or not Geel even works on auctions. But yeah, that's something that can be talked about for another day.