Hmmm... Agreed that they're mostly 2D sensors, but apart from near-field the post-processing brain can use depth-cues to for us 'see' in 3D. Also, you don't see in 3D unless your head/eyes/target is moving, right?

Strictly speaking this doesn't make them a true 3d sensor, but rather a 2d sensor with an accompanying depth-map. In order for them to be true 3d sensors they'd be have to transmit information about both the near and far sides of an object simultaneously, for example.