Although murdering people is really illegal. And that seems to deter at least some murderers. It's a similar logic with encryption. The only difference is that

Although murdering people is really illegal. And that seems to deter at least some murderers. It's a similar logic with encryption. The only difference is that encryption is mostly used for non-nefarious purposes, but 99% murders are bad. There is no reason to laugh at the statement. We should highlight that benefits of encryption far outweigh the few possible misuses. What he's saying is perferfectly logical if he views encryption like a weapon used by bad actors (like a sniper gun).