Every time I return to this repo, I think it's awful, and I try to improve the recovery phase's usability.
That said, the author of the article notes that "[His wife is] not a techie and has absolutely no interest in becoming one." I'd advise him to separate the concerns of living the life of a techie, and handling the death of one. If you've ever been an executor of a loved one's estate, or worse, in charge of the estate of someone who died without a will but with significant assets, you know that dealing with someone's affairs after death is complicated or expensive (and often both). Asking someone to install some software and enter credentials is well within bounds.