How important is pixel anchoring in design?

Question

Design

Hey everyone,
Illustrator has a snap to pixel feature. Please tell me how important this is in graphic design. If I understand correctly, snapping graphical objects to a pixel allows you to convey a clearer display of these objects. If so, then I can still understand the importance of this feature in UI and UX, but how important it is when creating an illustration. Also, you can’t take into account all monitors, including mobile devices, that is, if I link my work to a pixel grid, it simply won’t work on my friend’s device.
These are all my own assumptions, but I would like to get to the bottom of this.

Answer 1

You misunderstood the pixel grid. This is just a snap to pixels function that avoids the "soap" in the lines that appears due to sub-pixel anti-aliasing.
Plus, it’s stupidly more convenient to draw small details that start and close at the intersections of the pixel grid - you don’t need to zoom in to the maximum to make the lines converge.
That is, it has nothing to do with the resolution of the monitors. It's just a constraint that the line node should be exactly at x:10, y:10, and not x:10.5, y:11.1 (conditional coordinates).

Answer 2

You got it right. pixel-perfect is only important in interfaces. Moreover, it is really important, and they will dissuade you from this, but the soapy interface is not pleasant to anyone.
In all other areas of design, pixels do not matter.