Can someone debunk this

[pocaracas]

No. It's the wrong question because it's a red herring. The apropos question is not how Astreja would correct the 'design', but why the 'design' should require correcting.

We must first figure out IF the design CAN be corrected to determine if there is even a flaw...

So once again, how would you improve the design?

---

You see where your nose is?
And where your mouth is?
And then you see how their functions have to cross over to reach lungs and stomach?

The quick and dirty engineering solution is to simply swap the mouth with the nose... I assume some extra details should be tweaked.... perhaps putting the air intake right under the lower jaw? And have it be more of a wide chamber, instead of a tall one... and instead of sharing glands with the eyes, it would share with the mouth.
Extra point: no more sinus.

How does speech factor into this design?

Does speech need to be like ours? or is it just sound that's required?
It can be produced by similar vocal cords like ours, sending the sound out through the "nose". This nose would have some muscles to help introduce variations in those sounds, much like our mouth and tongue do.

Alternatively, it is well known that as we inhale, often air ends up in the stomach... we could have air go in there all the time and have a special system designed to send out air through the mouth, thus producing speech very similar to ours... but perhaps a bit smellier