> while software engineers would be terrified
At least surprised. There are solutions to these problems already.
Author seemed to have learned decorators and is enthusiastic about abusing them, instead of learning the stdlib.
The capturing of print statements. Why not use the Logging machinery, instead?
Or the @stacktrace, it seems what they really want/need is a debugger.
But anyway, if these solutions fit their programming style better, so be it.