I am curious to see how people played out this scenario and why.
Personally, I took the talk down approach. Sure, we all want a little action and who better than the guy who prematurely killed an old man having a heart attack right? However, throughout Episode 3 it felt like they gave a lot more logic and reasoning behind his actions. There is clearly something on his mind he can't get past and it might even help him in the long run to deal with it. So I talked to him about it and I think I did the right thing personally.
I never felt Kenny was "a bad man." He can be too impulsive, but at his core I can feel he is a genuinely nice person. I am glad I stuck to that feeling.