Nonsense. Different products (from MS) are for different people.
If it was true what you are telling, doubt they woild provide loads of diagnostic tools for windows, debugging tools, kernel symbols, performance tools, etc.
Before they hired/silenced him, those tools were developed by Russinovich.
Comparing the most important product(s) at MS with any other MS product/project and arguing they are somehow "equal" in the eyes of MS (because press releases, marketing) is a losing game.
Kernel symbols are NOT published by Mark Russinovich. What would be the purpose to publish them other than aid debugging the kernel and making sense of what's happening under-the-hood?
Debugging stuff and analyzing performance stuff doesn't make me feel like MS would like to hide internals.
Comparing the most important product(s) at MS with any other MS product/project and arguing they are somehow "equal" in the eyes of MS (because press releases, marketing) is a losing game.