I have no experience with Microsoft documentation. Still, I don't expect you can extrapolate from aspnet core docs to the whole Microsoft docs including kernel, userland and UI, compilers, programming languages, gaming products, etc.

What other products with unusable docs have you had experience with? Can you point to some particularly bad examples from aspnet core for my own education?

Also, I'm curious about how awful/passable/good documentation is distributed among the many tech products Microsoft owns and publishes docs on. Do you know about any good docs from them?