Loads of people use Signal by "Moxie Marlinspike" though, and whenever I bring that issue up here its RIP karma.
The developer of this extension doesn't have that.
This can be mitigated by disabling auto-update functionality and insisting on reproducible builds.
edit: What I originally wondered was what was meant with the "RIP karma" comment by the parent?
I asked this the other day on a similar comment, and the best they could do is critique Moxie for having a savior complex