Can you replace the SSD in a 2019 MacBook Pro?

No. The last MBP with a slotted SSD was on 2015. Since then the SSD has been soldered to and integral with the logic board, just like the RAM.

No, the SSD cannot be upgraded because the 2019 MacBook Pro has a soldered down SSD. You would need change out the entire logic board and that would be very costly just to get a SSD upgrade.

Axel F.