Specter and Meltdown were 2 issues with the processors architectures. They affected ANY operating system.
I wasn’t talking about speed but there are many workloads where Linux is faster than Windows/MacOS. FreeBSD is even faster for many network related workloads.
Intel and AMD made their open source graphics stack OpenGL 4.6 and Vulkan compliant just last year. There are some workloads where they are faster than their proprietary driver on Windows/MacOS. This is very nice from an open source perspective.
For anyone that is interested on Linux news/performance comparisons I advise to follow www.phoronix.com.
