But it absolutely played a factor in his switch to basketball.
Turns out it was an elbow, not a shoulder, but it was the kind of injury that could've been a serious setback:
https://www.sbnation.com/college-basketball/2017/4/25/15383812/mark-smith-recruiting-michigan-state-illinois-ohio-state-kentucky-basketball
I'm sure he could've stuck with it and still been a quality college recruit, but it sounds like it was relatively severe and would've been a pretty significant setback for a teenager to deal with.
Doesn't matter anymore, though.