There are times when hansels pin on opponents hansels. In those cases, some towers will prevent small hansels from profiting on pinning. An argument could be made that hansels are a really bad OSW build, because they give up easy plunder to the enemy when they have no EB to hit. Of course they will always lose to big attack builds, but why lose attacks to a little hansel as well if a few mil in adt can prevent it?
You said if yourself that if someone wants you naked nowadays it's happening, using that same argument you could say it's pointless to have sdt anymore because a major alliance will have you cleaned in a few minutes if they really want too.
We are taking OSW right? If it is a well-matched OSW there won't be much bfa to go around. Also it's would be kind of humiliating if in a strip when all your bfa goes bye bye if an enemy hansel not only steals from you, but skims you as well.