This is a very patronizing view of people who all seem to be well informed about what this is and isn’t and who have already acknowledged that they will put it aside if it scares them. No one is foisting this on the bereaved wife and the husband has preemptively said it’s ok if her or her children never use it.
This might fail in all the ways you think it will. That’s a very small dataset of information, so it’s likely to be either be an overcomplicated recording or to need to incorporate training other than what he personally said, but it’s not your place to tell her what’s best for her personal grieving process.