Of course, the counter is that if you publish it you don't risk that someone actually is checking.
Open beats closed, but we must be careful not to think it immediately makes the code sound.
I've been thinking about this particularly recently in relation to Monzo, the will-be bank. There's no web app and slow progress on the android front. Lots of open source effort though, since they publish an API, but... That's my bank account I'm (not) giving open source developers access to.