Yes. Certainly there is always a trending asset with the benefit of hindsight. The problem is anticipating if and when they are trending. Does a current trend imply a future trend? what are the payoffs? Those are the real problems. Its kind of like "there is always an asset that goes up 100% in a year. Certainly. The problem is, which one? and how can we know before the move occurs? Looking at past trends does not tell us much - and if it does, it should be possible to test for with simple statistical tests.
There is always an asset trending
There are hundreds of thousands in the world...you know
The world of trading does not end with the SP500 or the EURUSD