<<< You're right in that it's buying 'strong' things and selling 'weak' things and is more momentum vs. mean reversion. m2c. >>>
Buying stong things, after it's already gone up, means potentially buying something over valued.
Selling weak things, after it's already gone down, means potentially selling something after it's become reasonably valued.
If all you are doing is following a trend, AFTER the trend has already been in place, that is a very risky strategy.
It signals that you have no idea what you are doing, but just want to be part of the herd, because you assume others know what they are doing.
In reality, all you know is, that they are doing it before you.
If you are merely following the crowd, you will generally be buying near the top and selling near the bottom, as you bounce from "story" to "story".
I just don't see how that can end well over time.
Investing is about price selection. Not story selection.