Because the Satmar Rebbe is a Tzadik Yesod Olam. A leader of the leaders. He was one of three Gedolei HaDor (the other two being Rav Aharon and Rav Moshe) who built the Torah community in America into what it is today. The Satmar Rebbe’s higher gadlus was held from by everyone across the Torah world spectrum; even by those who disagreed with him on some issues.
Something to remeber him by. It says in Parshas Eikev מראשית השנה עד אחרית שנה from the beginning of the year to the end of the year. Why is there a specific article ה ידוע in the beginning of the year. I heard the explanation in his name that every beginning of the year a person thinks this is the year (for the redemption), but at the end realizes that it is like any other year. This is the meaning of הן גאלתי אתכם אחרית כראשית it will be said that the redemption at the end will be like the beginning.
Let’s keep the jokes aside. I grew up in a Young Israel where the Rov was a musmach of R’ Dovid Leibowitz and this Rov held the Satmar Rebbe in very high esteem.
This is trivial but it annoys me nevertheless. While some hebrew/yiddish terms don’t have a regular transliteration, Yahzeit isn’t one of them. Yahrzeit, being a regular word in German and in Yiddish, has a standard spelling as shown.