How reliable are they, though? Probably not very reliable on their own. It may also depend on the size of the candle. You would probably want to incorporate this candle pattern with other filters, like , , to filter trade opportunities.
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.