Trading is one of the biggest problem of the bitcoin lots of people are making money with it becuase they know what they are doing and some other dont know and only losing lots of money.
Trading, a problem? The whole point of money is to be a medium of exchange, is to facilitate trade, if there are people making money trading, then good for them, for being able to put their knowledge to good use.
that's the point if theres someone which is focus to study deep into trading i guess he will able to make good position as he already have good idea on which ways the movements will go and that is an advantage trading is not pure luck it is a study of current chart movements allowing you to have some edge if you do your research.