I have recently observed no matter how good your TA is, it doesn't always work on alt cos most alt price direction is impacted by BTC price.
When BTC is up all other coin move up. So why spending time on doing technical analysis on alts when doing it on BTC gives you a potential clue of most assets price direction?
Well, it's obvious that even though bitcoin has a great impact or greatly affects other currencies or altcoins, the movement of certain altcoins will still depend on how people invest in the currency or altcoins, meaning altcoins are volatile because there are transactions happening in that currency every minute or second, so don't solely rely on bitcoin movement because some altcoins might become opposite. That's why TA, or technical analysis, is important, and honing that knowledge and skill will greatly help those traders in order to earn through bitcoin and other altcoins. And I dare you, OP, if that is your statement, then why don't you try trading just by looking at the movement of bitcoin and trading into specific altcoins? Let's see if you will efficiently earn without TA or any analysis. That's why TA and indicators are there in order to help traders earn and maximise their potential profit.