This is very much a tangent, and was asked in bad faith, but I’ll answer anyways!

One of the interesting things about working on distributed systems, is that you can reproduce problems without having to reproduce or mock a long stack trace

So I certainly don’t see the case you’re talking about where it takes hours to reproduce or understand a problem without a debugger. Of course there are still many times when a debugger should be consulted! There is always a right tool for a given job.