Re: Whatever for?
No one is forcing you to use this, and the FUSE driver wouldn't go away. It doesn't cost anything to add a driver built as a module as they pretty much all are in all major distributions, it doesn't make the kernel bigger or use additional memory.
This would allow eventually removing the read only kernel driver currently included, and probably be better supported than the FUSE driver since there's a company with a commercial interest in NTFS standing behind it.