Yseribus: Yes, in writing multiple times published in his voluminous sh”ut seforim easily found in butei medrashim all over the world. Or you can speak to him directly and very easily in his shul in New York. And, no, he isn’t outnumbered whatsoever. In fact you haven’t cited a maare makom for anyone else who says otherwise.
Nitei Gavriel Nittel, Nitei Gavriel Chanukah p. 385, Nitei Gavriel Luach Dvar Beito, Nitei Gavriel Chanukah p. 410,
Small sample of other maare mekomos: Darkei Chaim Veshalom 828, Chasam Sofer 7:31, Makor Chaim of Chavos Yair 155, Igros Kodesh 13:120, Hayom Yom 17th Teves, Likkutei Sichos 14:554; Igros Kodesh 13:120; 14:351; Reshimos Hayoman p. 365, Hisvadyus 5750 2 p. 49; Reshimos Hayoman p. 365, Shaareiy Halacha Uminhag p. 179, etc.
Small sample of Achromim who held of nittel nacht themselves: Rav Yonason Eibashitz, Rav Yaakov Emden, Rav Yisrael Salanter, Maharsha, Maharam Schick and others