I would think not. It finally showcases the flexibility he put in to the core of NT.
I interpreted that as sarcasm, actually.
Eh, the WSL stuff avoids most of the NT subsystem style flexibility.
Not that "finally", Windows NT was designed specifically to support POSIX and OS/2 alongside Win32 apps and the first few versions actually shipped it.
Though WSL required more work than WSU or OS/2: they needed a new lightweight process model, for example. That's more serious internal work.
He isn't known for being a fan of Unix.
Yeah I'd hate to be tied with extreme scale emulation efforts that serve millions of users built by multi billion dollar corps. Shame! /s
Maybe it's punishment for screwing up? I just picture him grinding his teeth and cursing under this breath the whole time....