Replacing the Greyhound gives you a much shorter legged plane that is far more dangerous and complex. The Greyhound has had 8 crashes since 1964. The Osprey has doubled that in a third of the time. God only knows how much worse it would be if they did it by flight hours.
And a plane with less cargo capacity than the Greyhound.
But the Greyhound couldn't ferry the F135 engine without dismantling it into two sections.
https://www.aviationtoday.com/2018/04/18/f-35cs-cant-receive-spare-engines-carriers-without-v-22s/
For better or worse (I'm with you, it's worse) the Navy chose the CMV-22B largely because it could deliver the F135.