3d cubic is more universally strong in all directions. Each layer has an infill offset. The offset allows for material to have a place to expand or escape.

One of the things that is not apparently obvious at first is that infill does not contain stops and retractions along the path. Everywhere that the pattern crosses is just over extruded. Look very carefully at the layer by layer slicing, and the individual layer step travel path. You'll see how it works and differs from other feature types.

I learned this by printing something with like 60-70% triangular infill. The printer kept making a terrible noise. It turned out that the high infill percentage and stacked triangles caused the number of overlaps in infill to rise drastically. After around half the print completed, the z-hop wasn't enough to clear all the over extrusions in the infill overlaps.

Different infills handle the overlapping in unique ways. Some extrude the entire pattern every layer. Others alternate between an X or Y half of the pattern on every other layer... Or at least that is how it worked last time I went into the details to solve some of my issues.

If you have the computer memory, you can load the sliced version back into FreeCAD to see even more detail.