There are some people won't touch anything to do with open source projects as they feel it might have issues with security. What does open source actually do for security or change how it works?
People who don’t touch open source are mouth breathers. So next time someone says they won’t use it because it’s FOSS, you know who the weakest link in the building is.
As others have mentioned, it’s more secure code because it’s freely available. With closed source, you have no idea whats going on.
Look at it this way. FOSS is like a real safe. You can see it. Touch it. Kick it. Punch it. Closed source is like a blanket and I tell you there’s a safe under there. No you can’t touch it or see it. Trust me tho, there’s a safe.
In fairness, this is only the case when people are actually inspecting the code. That safe could be a cake that looks like a safe, but if nobody tastes it there is no real benefit (in terms of security at least)
It's a harder con to build a real looking fake safe, hoping no one will actually test it out, then just lying about what's behind a curtain no one is allowed to look behind.