Modern macOS might be optimized for Apple Silicon CPUs. But even when it was Intel only, there were probably times when Windows was lighter, albeit bad in other ways.
Neither of them use microkernels. They are monolithic kernels with loadable module support ("hybrid" kernels). The cores of both Windows NT and XNU were originally microkernels, but then they put all of the servers into the kernel address space to make them into the monolithic kernels that they are today.
It's from 1993. Also be more precise about what exactly you are meaning by writing "It’s a microkernel OS, it’s going to be slower by its very nature."
Otherwise don't be offended when people are offended by regurgitated and meanwhile disproven non-sense.