I disagree with you. 12 months is quite an indicative result. The only question is how much complete statistics from 12 months the trader himself will show. Most often, they show only positive results, hushing up the negative ones. Most traders trade with a negative or zero, but try to show others only a plus. Therefore, it is important that the platform maintains its own independent statistics for each trader.
For most who had been offering these copy trades of whatsoever, then its not something new that they would really be mostly emphasizing their winning results and not totally
exposing off when it comes to their losing percentage and that's also a deceiving part where people who doesn't have an idea will just easily believe on what
they do claim.
Copy trading isn't bad though but be sure that you do know on when to take out your profits when you are in gains but overall its better to make your own spot trading lesson.