Technical analysis is everything. Even a simple look at the graphs can also be a technical analysis. This is a huge number of techniques. But newcomers most often think that technical analysis is an indicator. They think that if you put a lot of oscillators on the chart, they will find something special.
Everyone can really do technical analysis, just line up something and draw some graphs, and there you have it, you can find the pattern and predict the future price of bitcoin. However, it is more than that, I mean there are so called experts who totally rely on technical analysis.
So I wouldn't say it's bullshit or something, definitely something you can find it very interesting specially if you hit your prediction, however, its not guarantee that the pattern will always works. Most of the time, the sentiments of investors takes over the market.