Comment by SpicyLemonZest

The key insight here is that all code deployments have a risk of going wrong in a way that hurts the company’s bank account, and human beings following instructions to be careful do very little to mitigate that risk. This doesn’t mean CD is the right tradeoff for everyone, but it doesn’t change the problem space in some fundamental way - all of the tools you mention mitigate approximately the same risks regardless of how you develop your code.