The main problems are there have been no released versions since 2017, combined with an annoying "open core" development model where some nice to have features have been held back from the free version (although not ones we care about too much). For our use case (virt-v2v) speed is not an issue, but data integrity when reading, writing and modifying many dozens of files absolutely is, and ntfs-3g has been very reliable.

(Disclaimer: I've made occasional contributions to ntfs-3g upstream)