The rot can come from anywhere. In fact internally is logistically and logically the easiest for predators to operate in. This is why we should get away from being against Musulmaan and educate and support our panth to these dangers coming from anywhere.
Gurbani and ithiaas both tell us about Moorakhs, fakes, bad characters. Our parchar has gone Disney mode and then we just blame Muslims (not saying there aren’t Those with mal intent).
Gurmat is the highest and we need level up hard back to real ithiias, real Sikhi. Intelligent, expansive, inclusive but not naive