It really depends on the shop. The idea of running and monitoring what you build is essential to truly understand what your code is doing in production so you can make it more stable and secure. At the same time, expecting developers to know everything there is to know about operations is absurd. A logical middle ground is to have operations facilitators able to help developers complete the details like CI/CD pipeline setup and maintenance, log analysis and alerting, etc. Developers need to have active insight into all of these things but ultimately they are hired to write the code to solve problems, not to know off the top of their heads without Googling who to set up the pipelines for deploying and monitoring production code.