Most important part of the blog post:

We are planning a 3rd party security audit for the protocols and cryptography design in July 2024, and also the security audit for an implementation in December 2024/January 2025, and it would hugely help us if some part of this $50,000+ expense is covered with donations.

Any libre software with voice chat more decentralised than this?

Why is Simplex based. Damn this is cool.

However, I do wish they would adopt a more decentralized approach like Jami and Briar. It is very hard to get right but it has so many benifits.