Good point, and a valid question.
What I am describing is one of many of the properties of water, not the water itself.
You are correct in implying this as irrelevant based on a human body developing 100 PSI within his body or blood.
The fact water has this capability, is the analogy.
Another analogy is mercury; it flows with the density of bullets (lead), and packs a punch while being fluid.
Mercury is highly conductive, and sensitive to pressure; and wreck havoc even in small amounts electrically and toxicity.
Oh now, now his is saying Qi is mercury; ha, ha.
No, this is an analogy.
If I use the wind as an analogy
for an unseen force of Nature,
and then someone bottles the wind and says;
'this is not Nature':
I will agree.
The Author of the new book Axe Hand; Hsing-i & Internal Strength Workout