I'm not sure how a Shotgun consistently being unable to one-shot anything even with maxed bullet stats is biased.
I don't understand how this wiki refuses to tell people the truth that the Shotgun is without a doubt the weakest tank in the game. Even when presented with objective proof that this tank is poorer at everything than the Auto Smasher, people in this wiki still insist that they give the tank Strategies which due to the Shotgun's insufferably-low damage potential won't even work in the first place.
The Shotgun is a weak tank because it has the lowest reload in the game, very low bullet health and damage, and insignificant recoil to help with escaping.
I tested the Shotgun with this build: 0/0/5/9/9/9/5/5/0/0 (Arras stats). This means that the Shotgun had MAXED Bullet Pen, HP and DMG. I ambushed glass cannons with it and it failed to kill them before they could react. And when they reacted, my bullets could not get through their defense AT ALL, despite having a build that maxed all bullet durability stats and therefore should easily be able to utterly crush glass cannons within seconds. Instead, the enemy not only survived and outgunned ALL my bullets, but I was also unable to escape due to the Shotgun's laughable lack of recoil and the Shotgun having the lowest recoil in the game. The tables turned on me in an instant, and I was dead within seconds. Had I played as another tank with the same build and similarly-weak base bullet stats, e.g. an Auto-Gunner, I would've easily crushed that enemy, or at the very least, fight the enemy to a stalemate.
And since you can't ambush, outrange or outgun a glass cannon with the Shotgun, imagine how much worse this will be against RAMMERS. That's right, contrary to popular belief the Shotgun stands NO CHANCE against a rammer class. This is because even when shooting them point blank they will lose less than 7% health - less than the amount lost when shot at by a single Basic bullet with the same build (and at long range btw) - and since there's insufficient reload to make up for that, there's no way you can whittle the rammer down to less than 40% HP, the amount of rammer HP which there's a possibility of surviving a ram attack, before getting hit and killed. With poor recoil and reload to escape or juke and not enough damage to stand one's ground, it's appalling how the Shotgun supporters continue to insist on using it AT ALL. It's a simple calculus: You can't use a tank with the lowest of every possible stat against tanks of extremely high power (e.g. Factory or Mortar) and expect to survive longer than 6 seconds, let alone triumph! Even if you ambush, even if you juke to the best of your ability, even if you are RYS from the Comps, Records, and Takeovers Discord who has adapted his skills to the Arras environment, you cannot POSSIBLY survive a fight to the death if you are outgunned, outmaneuvered, and outmatched in every possible variable and every possible scenario!!
To conclude, the developers really, REALLY need to buff this tank before the strategies applied in the Diep.io Shotgun page can be considered viable. Here are the possible ways they could do this:
LEGEND: ^ = Buff, v = Nerf, - = No Change
Bullet Quantity: ^
Bullet Quantity: ^^
And if/when the dev buffs the Shotgun in some of these ways or others, the strategies on the Shotgun's page should be adapted accordingly. Until then, somewhere on the page it must be mentioned that the Shotgun is currently the weakest tank in the game and the only best strategy to do with it is to avoid it. After all, we are now the Official Diep.io Wiki, and we therefore CANNOT afford to give people strategies that don't work.