Having an experienced closer makes perfect sense. I think you all know the arguments in favor. Most MLB teams subscribe to the reasoning.
More importantly, Sean Marshall is one pitcher. Teams want to have perhaps three very effective, late innings relievers. Even with Marshall, with Chapman becoming a starter, there is a clear need for additional very effective late innings relievers on the Reds. Whether a closer or not.
So it's really not so baffling. I know, relievers are unimportant, it doesn't matter who you put out there, closing experience means nothing, all these arguments.
But very few guys running baseball teams adopt them.
So the Reds are looking for one more good late innings guy.