Ncuti Gatwa is leaving Doctor Who after just two seasons

After only two short seasons, Ncuti Gatwa's time as Doctor Who has come to a (rather disappointing) end.

Note: this post contains spoilers for this past weekend's Doctor Who season finale.

In the final moments of "The Reality War," the Fifteenth Doctor (Gatwa) sacrificed his current form to save the life of a child, and in classic Doctor Who fashion, the Time Lord's regeneration process ended with him getting a (sort of) new face. It's not exactly clear how or why, but the Doctor...