There’s limited time. One cannot vey curious about all the stuff related to programming, so we must be selective.

Sure.. that’s the story of the lumberjack with a blunt axe.

Nah, debuggers are useful but hardly necessary to do your job well. People have been productive at programming long before they had many useful tools at all, the most important thing will always be how well you understand the program you are writing and not how you use your tools.