Just my two cents, but I think the number of all time talents who think they've been done a favor by getting an opportunity isn't very high.
I agree with you though that this whole good will concern is not worth fretting over.
The Braves have plenty of ways to make amends from any bad will they show by keeping him down along the way. And fans being upset of being deprived of 8 or 9 games of Acuna surely doesn't matter.