the gedolim of Eretz Yisrael have come out many times with statements that concerts and the like are prohibited, even with separate seating and even if the event is only for men.

Kikar reports about a "dinner" on behalf of the Gerrer institutions of Eretz Yisrael set to take place in the USA next week with the main attraction being a performance by Mordechai Ben David, along with some other performers.

Now, they could have explained it away saying that the Gerrer Rebbe never signed on any ban or prohibition but that would not be true as he did sign on such a ban a number of years ago...

So, with the Gerrer Rebbe against such performances (arvei Shira and the like), why is it ok for the Gur institutions to hold such an event with such a performance?

The answer given by the relevant askanim is that the culture in the USA is different so it is ok (even though it is on behalf of the Israeli institutions.

Sounds good to me. Whenever there is a self-defined cultural difference we are now able to ignore the psak of the gedolim and even our own rebbe... many people have said similarly in the past - that a given psak isn't relevant because of x, y or z differences - but now the response has the hechsher of one of the gedolim saying my psak can be ignored for those reasons.