May be because the shank extends 2/3 of the way into the bowl, but with the top half removed, creating an open channel starting in the middle of the bowl with tobacco directly in it.
Just my theory as I know I'm puffing gently as I've learned with stronger pipe tobaccos, unlike a cigar, you don't want to fill your mouth full of smoke. With most pipe tobacco, this easily overwhelms the palette and you get a harsh, generic Tobacco taste, and miss all the nuanced flavors. Plus, packed right, the smoke flows freely and easily with the same gentle puff, just longer in duration for more smoke.
Plus, I learned from my wild days in the 90's, not to suck too fast or hard on a bowl, or you'd cough out all the desired smoke, and get coals in your throat if your screen had developed a tear or hole.
Pipe smoking is definitely more detail oriented than Cigars, and along with good advice, just takes a lot of practice to get everything down it seams.
I'm good at filling the bowl just right, now need to work on small sips of most tobaccos, and tamping without having the opposite effect and putting out the coals.
I friggin love tobacco!