Not ideal but numerous people on that team have ties to government, elite schools, or Silicon Valley.

What better options are there for email?  Skiff isn't good anymore from what I remember and pretty much everything else is Big Tech /not E2EE.

Signal and Tor both have deep connections with military intelligence but lots of people still rely on them. 

We have to use the best (or best of the worst) of what we have available while we build better alternatives. 

  

 このサービスはどうだろうか？“based on GrapheneOS”
 https://www.apostrophy.ch/about/