Recently (Jun 24, 2018) Linus Sebsation published a video where he shows the viewer a lot about his companies server infrastructure, reasonably late in the video he shows what kind of bandwidth they need for editing 8k video. Odly enough it is about 3Gb/s which is well within SATA 3's practical limit of 4.4Gb/s, its quite safe to put the myth that Video Editing is a workload that benefits from NVMe to rest.