The truth is CS will do some roll backs of accounts from time to time to prove a point. They've done it to many long time players who have exploited the in-game museum glitch.
But they are crippled in front of real hackers who use jailbroken softwares. Those max space age accounts can be created overnight. They can get banned, they'll be back the next day with another alliance at 12k and stealing more glory from leaderboard alliances.
But then, if it wasn't for the so-called cheaters (i.e. players who upgrade for free), the player pool would be really small. Those accounts are there to push the real money spenders to compete, buy crowns and troop cards. It's almost part of the business model indeed.