Their write up is a little confusing, especially when combined with your statement.

> The imagery starts with panchromatic plus 4 color aerial imagery that was collected at a native GSD of 3.8 cm, which enables accurate removal of aerial sensor properties and resampling to the Albedo 10 cm resolution and camera properties.

Makes it sound like they have a spatial resolution of 3.8cm per pixel. This isn't panchromatic in a single pixel, but that's also true of things like Bayer mosaics in digital cameras.

Where do you see 30cm+?