Hi,
You are welcome to disagree, I have no problem with that.
Also note that I am perfectly happy with you using Hyper-V, use whatever works for you.
As a sidenote, if we would have VSS writer support your backups still grow by gigabytes even if just a few bytes in the virtual disk itself have been changed.
Only if your backup software supports deduplication that part would be cured.
My opinion on the matter is that VMware has lots of other problems to fix and features to add to their Workstation product as this one.
Although I concur with you that VSS writer support is a "nice to have" feature.
--
Wil