This isn't even remotely true. An SSD on the J2I carrier will be limited to SATA3 speeds, which is 6Gbits/sec. An NVMe running at full tilt can hit anywhere from 24-32Gbits/sec depending on the model. They're literally 4-5 times faster than SATA3 drives.
Almost anything would be faster than the surveillance spinner it ships with. The bar is much lower than NVMe drives.