On the TB models, yes. On the entry non-touchbar 13-inch, it is still Apple's own PCIe implementation.
DIY data recovery was previously difficult enough given Apple did not conform to the PCIe-NVMe standard. Now, with the 13-inch Touchbar and 15-inch, an additional layer of complexity is added. Data recovery costs may be higher, and data recovery options may be more limited since certain types of damage to the logic board could prevent access to even a fully functional hard disk - further emphasizing the importance of backing up, and, in some cases, backing up with bootable clones as Time Machine on its own might not be sufficient.
On a positive note, Apple has subsidized logic board replacement costs, so the price of replacing a logic board (which means replacing the SSD with the TB models) is lower than one may expect.
Consequently, anyone buying any computer (but especially a touchbar MBP) should assume that, in the event of system failure, data will be permanently lost from the primary storage if it is not backed up.