Not saying he is horrible but Braves have never been fully behind him. There has always been talk(even this year) of other options, committes and so forth. I just wouldn't be surprised if they ended up with someone else should they find themselves in a decent spot down the road.
Not a terrible guy by any means, he is just not highly thought of and will have to be better going forward to maintain the job for the season. Decent K rate, too many walks.
Not sure why, he's probably around the 10-15 mark of all closers in the league this year. Everyone wants a Kenley Jansen ( Not this year's version tho ) to close for them. There's plenty of teams with way worse closers.