No, it's telling a child that has been hit by a car repeatedly to look both ways next time, when you know it would definitely reduce their chance of getting hit.

Performing edge ingress traffic filtering of known-trunked node addresses (i.e. BCP 38) has a high likelihood of reducing the effectiveness of DDoS attacks.

No, the equivalent would be telling children they can't have toys because someone might steal a toy gun from them and use it to hold up a bank.