R>F would make her 1-A and that's contradicted. So it's not useable as a upscaling method.
The only statement I see is that she views 3D like how 3D views 2D, which is a Tier 2 feat and not a Tier 1 feat.
I still hold my opinion. I may ignore whether it is R/F or not but at least it shows that it is superior to the lower dimensions.
In this scan, Shinpei asked the question "So this is the four dimension?". Haine has not confirmed that Shinpei's question is correct and it would be difficult to use a question as evidence.
Next, you say that all you see is 3D looking at 2D. But obviously this is just a comparison. Haine claimed the owner of the eye could ascend to a higher dimension, a place above the ordinary world. There, the owner of the eye has completed control over space and time "It's like how us, who live in the three dimension can easily pick up, flip, and burn a manga, a world of two dimension." In other words, Tokoyo views 4D timelines as 2D.
Finally, let's talk about the differences between dimensions. As the
Tiering System FAQ page explains, a dimension is an uncountably infinite number of lower dimensions stacked on top of each other on an additional axis orthogonal to the previous dimensions.
Basically, an arbitrary object of dimension n is essentially comprised by the total sum of uncountably infinite objects of one dimension less, which may be described as lower-dimensional "slices", each corresponding to one of the infinite points of a line. For instance, a square is made of infinitely many line segments (Lined up on the y-axis), a cube of infinitely many squares (Lined up on the z-axis), and so on.
Here, Tokoyo's observation of 4D as 2D showed a quantitative difference. Simply put, the lower dimensions always have a dimension of zero in an additional axis. For example, a 2D plane has a height (Z) of 0, so no matter how much it overlaps, it cannot become a 3D box. Similar to Tokoyo, no matter how many timelines overlap, Tokoyo cannot be reached because it is quantitatively superior.