Dont ask anybody why you get banned, ask yourself in 1st place. Not every games are designed to be cheat excessively, some cheats are being used to measure your progress like that moderators said. When someone already breached "their standards", you will have big trouble because your account will be investigated by moderators and once its verified, kiss goodbye to your game ID and accounts (mutiple/repetitive ban happened)
Majority of mobile and other games are grind-oriented with lots of MTX required to progress instead of giving freebies to f2p with fair amount. Thats why they resorted to cheat and they dont care if they get banned, just make new one and keep going.