I dont think its strange. the windows world has solved a lot of these issues - its other issues it hasn't solved that generally make people go to other platforms.

AD setups are actually pretty complete if you ask me. Heck, OpenLDAP is a lot to setup vs AD. Same for cert management. User management. Machine management. Kerberos that works (since most don't even understand it: its a ticketing authentication system - the thing we keep recreating and calling it something else).

It goes a long way - and I'm glad more tools are coming to narrow these gaps!