I never thought it wouldn't have airflow holes (how the hell would the air get in without airflow holes?!?). What I meant by "properly closed at the bottom" is that it is closed on the bottom with machined holes, as opposed to a non-closed open bottom that requires a little screen just to hold the expensive little balls in.
Many other ball-vapes on the market also use a screen to hold the balls in, and I had no interest in them for that reason as well.
But thanks for letting me know that the Zirconia model will have an option for an add-on bottom. That's fantastic to hear, and it makes me feel a lot better now. I wanted the zirconia for the better flavor, and that info makes me still want one now, once the part is released.
Or, maybe I'm just being an irrational dumbass, hanging up on the screen issue. Maybe I'm completely wrong.
Maybe I should "fuck around and find out" anyways? lol