It’s basically the same as me not installing that Flappy Bird copy because the dev is Russian. I don’t trust it, even if the code is available to review.
We also learned a lot about trust with that file zip software a year or so ago. I don’t remember the details of that, but open source doesn’t automatically mean secure.
The politics are left of center on social issues, but I would say it’s as bad as Reddit. I see a lot of anti-trump stuff, but that has nothing to do with his politics.