If you intended to reply to a different thread and accidentally ended up here instead, there is truth to what you say, but it has nothing to do with this one.
As it pertains to this thread, where the sole key holder is dead and took the knowledge with him, how do you anticipate to carry out gaining access to the data using live attacks? There are plenty of reasons why the government wants access to data even where prosecution isn't necessary.
I said appeal to emotion. There is no logical foundation for the question. It can only be asked in the context of how one arbitrarily feels about the subject, serving no purpose, and derailing was taking place for no good reason. How you one feels about the subject has no impact on what we are talking about and trying to draw a link between them is completely nonsensical.
Dead people are distinctly immune to prosecution, and generally granted fewer rights.