For Bitcoin, yes to varying degrees.
Astrology obviously is pseudoscience but hunches and dreams probably have a more valid foundation based on human intuition and subconcious thought processes.
Elliot Wave theory and other TA is based on observation of market trends in things other than Bitcoin.
Hunches and dreams = emotions. Investing/trading on emotions is like burning money. Don't even get me started on astrology. Might as well trade according to your horoscope in your local paper.
Anything that has prices that can be charted can be analyzed according to TA. Btc has prices can be charted. Ergo TA can be used on btc.