[nocman]

"When a developer is negligent and user data is compromised, do they take responsibility? No."

^ Well, replace "negligent" with "makes a mistake", and I've taken responsibility plenty of times. Situations happen. You do your best to mitigate mistakes in code within the constraints of your situation, but you don't always catch everything. Corner cases arise that you did not foresee, etc.

I have missed things that have caused user data corruption (or a similar problem) before, and when it was discovered I apologized to the user(s), fixed the problem and moved on. It's an imperfect world and I'm not omniscient. Yeah plenty of developers would just patch it, move on and not tell anyone, but there are a lot of us who care about the people we write code for and do the right thing.