??? Parish priests were "immensely powerful and wealthy" if your standard for power and wealth is "able to read, even some Latin, not required to sleep in the same room with the pigs, and not treated like the slave of the local noble".
Bishops were frequently immensely powerful and wealthy, but they were generally made bishops because they were powerful and wealthy, not the other way around.
And the "celibacy because of greed" argument is historically bogus; celibacy was mandated in the West from before the time of Constantine. The Lateran council reiterated the customary discipline because it was being abused, quite openly in places.
And yet somehow 1tim4:3 doesn't apply?