All the quacks have "proved" with their drugs which I'd imagine significantly less (not only in the amount of information but in its accuracy) than what we know from lucid dreaming and dream yoga is that they can repackage a definition of "death". At most all they've shown, if they've shown even that, is that memory of consciousness seems to continue to exist within a physicality. Well, duh, um, I mean, how
That's incredibly advanced exploration into the mind that those German scientists are doing. They're only 2,000 years behind the Tibetans.
So, yes, it would be a leap of faith to say life or even consciousness, continues outside a specific physicality wherein that life or consciousness was empirically known.
Hopefully the continued mystery won't come as too much of a disappointment to science.