All games are not meant to be for learning purposes. some are just for killing time, when you have nothing more to do.
In deathmatch type of games, you're just constantly running and shoot each other to survive. What you've learned there? Survival skills for humanity? None. It's just fun.
Same applies here. It's just a game to test your strategy skills, nothing more. Btw, Am not a fan of CoC and never played it before, but this is how some games works.
But i hate how some devs force you to buy the in-game items like gems, gold, energy etc., in order to win.