I wouldn't consider breakouts (or breakdowns) TA, since when one looks for entries in this strategy they are typically looking at (or either the result of) volume and price action correlations/divergences between the security and their corresponding pair; typically the index.
You mentioned forex so you could be right in this area as that area of trading isn't my expertise. But for stocks, it's rare that they just trade in tight narrow horizontal channels. There is usually a clear breakout/down from an initial early day channel that can last a few hours up to most of the trading day. Even false breakouts/downs can be advantageous for experienced traders who have adequate buying power.