I would not say that adding gamma correction in post is more flexible, but working with HDR images in post is. HDR do have gc=1, so if you want to profit from the high number of light levels there, you have to do gc in postwork. The profit is in the HDR, not in GC postwork.

A ship in port is safe; but that is not what ships are built for.
Sail out to sea and do new things.
-"Amazing Grace" Hopper

Avatar image of me done by Chidori.