TFA is pretty cool and the technology is exciting. Nevertheless...
Tech people always think that everything can be solved with better technology. See, we made a protocol for uncensorable communication, now privacy is restored and the evil government plan is thwarted.
No, if e2e becomes illegal, noncompliant apps outlawed and taken out of appstores, if by using this people will risks a fine or prison time or even just police checking you're not actually a pedophile who needs to hide something - regular people won't use it. A small fraction of privacy nerds may do, but that's not significant on a social level. This won't solve recent world privacy problems.