Care to elaborate how working in a microkernel instead of a monolithic one wastes programmer time? Because AFAIK, every single evidence we have points the exact

Care to elaborate how working in a microkernel instead of a monolithic one wastes programmer time? Because AFAIK, every single evidence we have points the exact opposite. Also, microkernels only waste CPU time because modern CPUs go to great lengths to punish them, for no comparable gain for monolithic kernels, apparently because that's the design that they always used.