The key point we keep coming back to with this work is that, if we do add a new kind of window management to GNOME, it needs to be good enough to be the default. We don’t want to add yet another manual opt-in tool that doesn’t solve the problems the majority of people face.
In the end, this is an open platform and if they make something I don’t like, I’ll just use something else. But that doesn’t mean I shouldn’t voice what I see as a misstep forward taking gnome further from the kind of interface that made it so successful.