If he has talent and is demonstrating it and entertaining, hatzlacha to him. As long as he upholds high standards of conduct, it is a kiddush Hashem, in my opinion.
Suppose I said a religious Jew took a job of second in command of the largest empire in the world? Would people say it was bad for the Jews?
Suppose I told you a prominent religious Jewish person took a job as the chief medical doctor of a ruler in the non-Jewish world?
Suppose I said another great religous Jew conferred with secular, non-Jewish scholars on the linguistics of the French language AND incorporated that language into his limudei kodesh works.
And on and on…. Of course there is the “recommended” path, but sometimes, if one is careful, and they walk the path less walked, we should not be so quick to run out with pitchforks and torches.