What makes me a bit uneasy about the project is that the website doesn't explain who is building it. For most open-source, I think that would be fine. But browsers auto-update, so their vendors essentially have the continued ability to run code on your machine. You want some confidence that they won't get owned and won't sell the access to bad actors down the line, so there is an element of personal trust.

All the website gives me is the name of a Wyoming LLC, Wyoming being one of the states you incorporate in if you don't want others to be able to find out who runs the company.

Granted, you can find out a bit more on Github, but in general, if you're building privacy- and security-critical tech... I think you ought to own it.