I agree that since op's project was for teenagers, they should probably have requested the consent of their parents first, and if the parents had rejected on this ground then it would make sense to me, but they rejected all of this because according to them BTC is associated with money laundering and illicit activities, when these same parents still use fiat currencies and payment options that are far more associated with illicit businesses that BTC will ever be, it only shows a lack of understanding in my honest opinion.