For trust issues, it all depends on the copy trading platform that will be used. Because if the copy trading platform is indeed trusted and has a very good reputation, in general a copy trading platform like that can be said to be trusted.
People trust and believe in all the copy trading that exists today. Most of the people now follow these platforms and start trading so that they don't face losses. But I think it can be a good sign for the purpose of profit but very bad if copy trading is basically facing loss. I think it's best to start trading later by using your own experience rather than copy trading. Because most of the times we have seen wrong advices from many platforms and people face lot of loss due to it so it is best to trade with your own knowledge. Since traders today believe in copy trading to make more money in a shorter period of time, it is difficult to say how certain it will be in the future.