I think that everything in TA is taken into account, including the candles. All the trends, bands, wedges and so on are, after all, based on the candles too.
The only thing is that TA itself is (in many/mosts cases) not good to be taken into account alone. There are many “external” factors to be taken into account when predicting what will the price do in the near future.
For example, on Twitter, many tell that the price will go up “any day now”, with nice drawings and so on, but they seem to have forgotten we’re still in a historic crypto winter, hence also the price going further down is a valid option. Which has actually just happened.

Candle sticks aren’t overrated. There are two types of traders based on analysis the fundamental and Technical traders. Although some combine both. But a technical trader can’t do an analysis without candle stick, it is so important that it is indispensable. If you claim the YouTube videos you have watched or the other  online articles and videos you have seen on trading hardly talked about candle sticks then what could they be using. Candle sticks is a tool that help interpret past events (price action over time) it makes prediction of future price movement with regards to past events. This candle stick formation tells stories of prices. Just like the three black soldiers, the hanging man and lots of others each gives important signal to traders especially when they form at strategic point in the market