I would fully agree with you that the linux implementation of the NTFS fiel system has matured over the last couple of years. But that is not the issue being discussed here. The issues is or was that with Ubuntu 8.10 the kernel and NTFS have changed in a way that it became incompatible with VMWare workstation running virtual machines stored on a NTFS filesystem. ON Ubuntu versions prior to 8.10 this wan not an issue.
Hope this adds some clarity to the situation, and I still use NTFS partitions for other data items with out any issues.