If even MS internal teams rather want to avoid it, it seems like it isn't a great offering. https://news.ycombinator.com/item?id=41085376#41086062
Remember, I said the _file system_ was just fine. It's that extensible architecture above all file systems on NT that causes grief.
The only method to 'turn off' Defender is to use DevDrive, which enforces ReFS, and even then you only get async Defender, it's not possible to completely disable.
> Example use cases include:
> * Running unmodified Linux programs on Windows
> * ...
That won't work if the unplugged Linux program assumes that mv replaces a file atomically; ntfs can't offer that.
You can read more if you wish in 'Inside the Windows NT File System' by Helen Custer, page 15.