Does the Bar Replay Tool Foster Overconfidence in Backtesting Results?

Bar Replay allows traders to manually step through past market data candle-by-candle to test strategy execution. However, Bar Replay does not simulate real-time order execution friction, bid-ask spread expansion, slippage during fast market moves, or the emotional discipline required to hold through drawdowns. Does visual Bar Replay backtesting build genuine market skills or unrealistic execution confidence?