Eliezer's solution to Torture vs. Dust relied on the assumptions that dust is at least somewhat bad and torture is clearly bad, and the reasoning that 3^^^3 is so big that if we choose to consider some aggregation of the dust speck negative utilities, 3^^^3 will outweigh any reasonable discounting of aggregation.
Now, I read in the OP that the Youtube existence is assumed to be zero value. I could go on actually imagining it and trying to assign some value to it on a gut level. However, people differ in their notions of "zero value", "a tiny bit good" and "a tiny bit bad" scenarios, unlike in the case of torture, which is unanimously believed very bad, and probably also unlike in the case of Sublimity.
I think a great part of the debate on Torture vs. Dust stemmed from uncertain value calculus of utilities very close to zero. The way Sublimity vs. Youtube is presented, I think it is going to head in the same direction. However, if I blank out the specifics, mentioning only that the first type of existence is value-zero and the second is definitely good, the problem gets reduced to 3^^^3*0 < any positive number.
Nevertheless it may not be a bad thing to debate and communicate our notions of close-to-zero value scenarios.
The torture vs. dust specks quandary is a canonical one to LW. Off the top of my head, I can't remember anyone suggesting the reversal, one where the arguments taken by the hypothetical are positive and not negative. I'm curious about how it affects people's intuitions. I call it - as the title indicates - "Sublimity vs. Youtube1".
Suppose the impending existence of some person who is going to live to be fifty years old whatever you do2. She is liable to live a life that zeroes out on a utility scale: mediocre ups and less than shattering downs, overall an unremarkable span. But if you choose "sublimity", she's instead going to live a life that is truly sublime. She will have a warm and happy childhood enriched by loving relationships, full of learning and wonder and growth; she will mature into a merrily successful adult, pursuing meaningful projects and having varied, challenging fun. (For the sake of argument, suppose that the ripple effects of her sublime life as it affects others still lead to the math tallying up as +(1 sublime life), instead of +(1 sublime life)+(various lovely consequences).)
Or you can choose "Youtube", and 3^^^3 people who weren't doing much with some one-second period of their lives instead get to spend that second watching a brief, grainy, yet droll recording of a cat jumping into a box, which they find mildly entertaining.
Sublimity or Youtube?
1The choice in my variant scenario of "watching a Youtube video" rather than some small-but-romanticized pleasure ("having a butterfly land on your finger, then fly away", for instance) is deliberate. Dust specks are really tiny, and there's not much automatic tendency to emotionally inflate them. Hopefully Youtube videos are the reverse of that.
2I'm choosing to make it an alteration of a person who will exist either way to avoid questions about the utility of creating people, and for greater isomorphism with the "torture" option in the original.