I've noted that turbine conversions of piston planes have become popular
(Turbine Bonanza, JetProp, Turbine Otter...). While reading the pireps of
these planes in Private Pilot, I saw that in most of these planes, the
turbine appeared to be turned "backwards", ie with the rear nozzle turned
toward the prop and the exhaust pipes near the spinner. Why is this so?

Triple Delta