Looks like they could well have been CNC routed - if you turn them sideways they're a 2D design so it might be even easier than 3D printing them (and pretty!)
I think you're right, but as someone who owns both a 3d printer and a CNC router, just preparing toolpaths for the router is more work than the entire process of 3d printing.
Obviously they had a reason to make this choice, I just think I personally would have made a different one.
Obviously they had a reason to make this choice, I just think I personally would have made a different one.