Since when is it normal or acceptable to vil fight on 1v1 nomad before TC's are up?

Seriously, I've just now had three, THREE, nomad games in a row where my opponent instantly started vil fighting before TC was even halfway up.

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What. The. **** is wrong with people who do this? What is the point? To me people that do this are lower than alt-F4'ers. For years I enjoyed peaceful nomad games with the gentleman's agreement that you don't vil fight before TC's are up. What happened and when did this happen?

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In any case, I refuse to engage in this. I will instantly delete my vills and TC as soon as my opponent does this. Enjoy the free ELO, asshole.