In cryptocurrency fundamental analysis is more useful. Considering that the technical analysis is based on people's psychology, it is difficult to find the direction. Moreover, you cannot find the price of a small precious coin with the TA, with little money you can direct the price.
it's true, fundamental analysis is really important for altcoins with low/micro (< $10M) market caps. these markets are hyper speculative, very low volume and low order book depth. so a big fundamental breakthrough can bring a 10x or even 100x move.
however, i find that with high-cap coins---particularly BTC---TA is much more important. fundamentals may underpin the long term trend, but in the more liquid markets, TA works reliably. TA may be based on market psychology, but the chart is the most accurate reflection of actual supply and demand we have.