I obviously can’t speak for all Jewish people, but I have a few left-wing Jewish friends and they fucking hate modern Hebrew exactly for its Zionist roots. One Jewish friend of mine is studying Yiddish as an alternative.
Zionists really do not like Yiddish. Theodor Herzl sold the “Yids” out to the Nazis for the purposes of his Zionist project. Herzl’s Mauschel and Zionist antisemitism
Herzl believed that there were two types of Jews, Jiden (Yids) and Juden (Jews), and considered any Jew who openly opposed his proposals for a Zionist solution to the Jewish question to be a Mauschel. The article has often been taken, since its publication, to be emblematic of an antisemitic strain of thinking in Zionism, and has been described as an antisemitic rant.
The word “Mauschel” is an epithet which is formed from the verb mauscheln, “to speak German with a Yiddish accent.” One etymology derives it from the Yiddish Moyschele or “little Moses”, though the sound also evokes connotations of Maus (mouse).