I see stories about how election is rigged or that there are security vulnerabilities and lots of people don’t believe the outcome. Why don’t they just open source everything so that anyone can look at the code and be sure the votes are tallied correctly?
How do you know that what’s open sourced is what’s installed and running? Someone should verify it and then you’ll have to trust that person as well.
Both open and closed source software share this problem, so this doesn’t really answer the question.
This still adds another moving part to duping people. It’s much, much easier to independently verify the software if it’s open source.