Well i can understand
Reek of Blood's frustration since you do know fair bit about tank mechanisms in general and found contradiction everywhere. But honestly, very few of the mangaka has wide knowledge about what they are drawing. And despite publishing a manga about tank, this manga author won't know half as much as the "tank otaku" (tank fanatics), or even you in this case.
I means what do you expect after seeing episode 1, with painted pink tank, and zigzag bullet dodging
But afterall, the main genre of this anime is still moe, and tanks is just a tool to play the events out. Don't expect too much and then complaint about how it's garbage to you
