Fair Value Gaps or Normal Spreads?

Are Fair Value Gaps (FVGs) a real institutional imbalance, or just high-volatility price slippage?"

SMC traders treat 3-candle imbalance gaps like sacred magnet zones that price MUST return to fill. But in high-liquidity Forex pairs, 'gaps' on lower timeframes are often just fast market executions during news events. Are FVGs an actual trading edge, or overhyped retro-fitting?