There’s a balance to be drawn here. Some want a fully “developed” pitcher entering the big leagues. That may not recognize that (a) pitchers can have their best stuff while younger and (b) pitchers can continue to “develop” in the big leagues.
Especially in today’s era when starting pitchers need not work 6-7 innings. A young SP can begin at 3-4 innings and increase - in the big leagues. I expect Hunter Greene will pitch rather short stints initially. No problem with that.
Not suggesting this be taken to an extreme. If Reds want to give Lodolo and Ashcraft a little AAA time, no problem. But it’s a decision based on the individual case.