We must be talking about two different audiences then, because web development in my experience has little to do with distributed messaging. Most web developer

We must be talking about two different audiences then, because web development in my experience has little to do with distributed messaging. Most web developers work in JS for the front-end -- they use Chrome to debug client behavior. Most also write the layer in the back-end that communicate with databases and other data sources and handle business logic. They use debuggers for their language to follow program flow and inspect values. Once their layer needs to communicate with other systems or do anything with distributed messaging, their responsibility ends and the need to debug the issues of the other systems becomes someone else's problem.