I found printing TechTom's “BEST Fairphone 5 Case - Rugged” to be incredibly difficult to print due to the large amount of required support structure (very much so with TPU). This remix flattens the back of the case so that it can be printed with its front faced up, which significantly reduces the required supports and makes the print much easier.
If you are concerned with the potential protection loss by the removal of the bumpers, I'd recommend you put in the work to print the original model instead. That said, this remix should still be very much effective.
The author remixed this model.