Uhhh riiight..., moving along.
If this study is well executed and scientific, it may put to rest a lot of notions on the existence of an afterlife, and let us collectively move on.
Well that's just it, what are they going to look at to gather data? They mentioned NDEs but the source of that phenomena is hardly in dispute these days. In fact there is nothing that has not been already conclusively scotched either through good science or because what's been offered is neither testable nor falsifiable. To me it is spending a lot of money to conclude the obvious, it's not as if there is some inexplicable phenomena still waiting on analysis, there's zip so what do you study?
Even if - and given the outfit involved I'd have my doubts - they reached a conclusion of no afterlife it would likely be framed as no evidence for one, not that there is none and it would be as ignored by the faithful as every other bit of science they don't like is ignored.
As for the 21 gram thing, that was as a result of bad / inaccurate research, there's no consistent loss and nothing else to be done there.
Hope is but the first step upon the road to disappointment.