"Never been a good pitcher" simply doesn't jibe with the facts, unless you totally discount Coors as a factor. He was certainly pretty good in 16-17. He's always walked too many guys, no question, but he still managed to be effective.
I also have a hard time calling a 3-year deal for less than $40 million the worst signing when we saw this winter what an albatross Heyward is around our necks.