If you plot altcoin returns they are going to return some sort of normal random distribution and you think that you can predict which days/weeks coins generally go up/down in?
This is why TA is ridiculous. It ignores the big picture.
Knowing the trend is important because external events could really make out some significant impact on the market aside from chart trading indicators and of course you would really need to be that versatile
or adaptive when it comes to situation.
As a trader then you should really be having these kind of qualities to make yourself sustainable.