Kick or vote yes for kick makes you a bad guy.
Use truthful words to tell him he is being stupid makes you a bad guy. And I doubt kind kitten and sugar words have any effect when one knows english and has many games under his belt but still does stupid things.
I dont remember exactly what was the one warning I got once, something about "You should resign blaa blaa something and you should leave/stop playing".
But how its in CoC now, theres really nothing you can do. "Do your best", well if ones best is sim city then thats it. "Have patience with them and do your best even so". = dont kick and keep playing to your best!
But then: "Do not try to make your team lose. Do not sabotage your team or any of your teammates. Do not do things in a game just to cause problems for other players. Do not deliberately play poorly in order to ruin the game."
----> "Note that using strategies or tactics that others disagree with is not griefing and is allowed, as long as you are attempting in good faith to play well and are not trying to ruin others' enjoyment of the game."
That last, so you are allowed to do whatever... maybe he was using sim city strategy which is allowed? And doing it in good faith? He must not have been trying to ruin others enjoyment.
I find it best to just not give a shit. I have cared about winning but Ive been moderated to submission.