Have you actually dug into the internals? It is pretty bad. Large poorly maintained code base with poor cryptography. Theoretically it is fine but I'd rather use Signal.

I would look into Jami, Signal and maybe Simplex Chat

It is a massive code base which doesn't seem to get a lot of maintenance due to lack of developers. Jami also lacks a security audit which doesn't build confidence

From a security perspective it uses dTLS which isn't great for metadata sensitive applications. Message delivery is also finicky since it depends on peers working reliably.