[nobody9999]

>If you're not even willing to make a bet for a single signed dollar, that doesn't speak highly to your confidence in your work.

I've long thought that one should have the attitude (and act to make it so) that one should be willing to bet their job on the quality of their work, but not necessarily actually do so.

And betting anyone (co-worker or not) that they can't compromise the systems (especially, but not limited to production systems) you're tasked with keeping from compromise is a bad bet -- even if you win.

I'd class that sort of behavior as having serious potential to be a "Career Limiting Move" (CLM).