Many young traders believe that their favorite crypto has the ability to be traded without considering BTC and the TA associated with it. Some day in the future, this may be the case. Hopefully.
As of today, BTC is the only crypto worth doing any extensive TA, for a few reasons:
1. BTC makes up over half of Market Cap or Dominance.
2. The overall liquidity of the entire market is extremely low in comparison to traditional markets. Even at the Dec '17 highs, the crypto market was a guppie among sharks.
3. Most, if not all alt pairing are paired to BTC.
There are other reasons that go further than the extent of this posting.
_______________________________________________
In closing, I would like to say that in the future, there may be wider adoption of certain projects that surpass BTC, and these projects may move the market. But for the time being, BTC is the main player.
The only TA that has any real significance in the crypto market, is BTC.