They didn't counter OP's claim, though. OP is essentially saying that software other than open-source can be trustworthy and the supposed counter-claim is that open-source software is more trustworthy. Regardless of that being true or false, it's not a counter to the claim that closed-source software can also be trustworthy.
They didn't counter OP's claim, though. OP is essentially saying that software other than open-source can be trustworthy and the supposed counter-claim is that open-source software is more trustworthy. Regardless of that being true or false, it's not a counter to the claim that closed-source software can also be trustworthy.