Which in my opinion creates a greater security issue, because normally, the beneficiary is someone we know. Therefore, if we have to give a time-locked transaction to someone, trusting that they will indeed broadcast it when the time comes, wouldn't it be better to rely on our beneficiary instead of an intermediary?
I think OP is concerned of his personal security.
Where the beneficiary and their relatives may threaten him (
physically) once the knowledge of him owning bitcoins is disclosed.
What I want to say is, in general, wouldn't it be better if we let our beneficiary now about our intentions and plans?
This is normally the case which is where the two example use-cases will apply.