Thanks, Rudder Sir. That's what I was looking for. Agree with the others that it'd be impossible to make that course reversal otherwise. The noPT must be an FAA special from low-time instrument pilots who've tried to crank in unneeded turns.
To your point that they're for reversing course though, if you come straight in, you'd also be expected to make the procedure turn? I understood they can also be to lose altitude.