The cryptocurrency TA operates at about 50 percent. All because the market is very speculative and a major player can break all the technical analysis.
The same can be read on the forums on trading in the stock market and forex.
Successful traders trade using TA. Others write statements similar to those cited above

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Of course, I am not an experienced trader, just starting to catch what's what. But for myself, I decided that it was best to trade on important news. The price almost always responds to the news.
Now I think that the main cryptocurrencies became more stable and their price does not depends from the news so much like it was in 2017.