To chime in on the aliasing-discussion, a pixel-perfect representation is the sharpest, with the highest edge-contrast possible, and edge contrast ist mostly what is perceived as an image being sharp. So Siglents choice to go for pixel-perfect fonts makes total sense for me, even at small size, very legible. There are of course PP fonts available for any size. But the tradeoff are jagged edges, especially for small angles.
If the resolution is high enough, anti-aliasing can be used to blend the edges making it even more pleasing visually.
Where it gets hairy though, is when when the resolution is low enough that an anti-aliased font will start to blend the edges and will even cut into the "skeleton" of the characters itself. Resulting in low contrast as most pixels will already be part of the "edge" and feathered out. An offender would be the Rigol 5000, for everyone who has one, a look at the numbers of the LA channels shows that the brightness within the numbers is uneven, depending on where a pixel lands virtually as to where it is rendered on-screen and thus blended. (I'm sure there is a rule of thumb how many pixels at full intensity there should be before edges are blended)
Taking a look at the latest two screenshots, in the siglent screenshot the top row illustrates this nicely as the font is pixel-perfect, put the symbols aren't. The Rigol screenshots seems unfortunately rescaled as not even the grid is rendered Pixel-perfect.
P.s. As a side-note, the wave-form rendering of the siglent seems a bit unfortunate as the pixels are unsymmetrical, making Y2Y slimmer than X2X.