They claim it is ”a lightweight lattice pattern that maximizes airflow while creating an extremely rigid structure.“

They also claim maximum continuous power is 1280W at 108–125V or 220–240V/1180W at 100–107V, so I can imagine getting enough airflow without building a hoover (I don’t expect this thing to be silent, but they will hav tried hard to make it as silent as possible) was a bit of a challenge.

Looks only. It is far from an optimal shape for airflow or thermal transfer

What concerns me is that I haven't seen any sort of dust filter on this box with high volume fans. That seems to be a recipe for rapidly dust-coated components.

I think there is some, but it couldn't be worth the cost. The marketing said there was 'more air than metal' which I thought was good marketing.