sure.. technical analysis in the conventional sense refer to the indicators, trend lines, supprt resistance, fibonacci etc.. which provide basically zero value to trading. logically it makes sense why they are useless... financial markets are driven by supply demand and human emotions.. the 'orderliness' is quite low... you'd be lucky to be 60% certain on average.... therefore any degree of derivatives (which technical analysis is) will diminish that already very weak signal to basically nothing. very interesting how something so useless can get so popular.
As said, it makes money, because you can teach it, therefore you can get others to pay to be taught and not many can accept there wrong, so they'll believe for ever. Indicators some work S/R work, but tricky, Momentum murders most of the time. Pull backs on trend only. Fibonacci total 100% BS what are you nutters on about.