Rockefeller Center’s Christmas tree lighting ceremony.Despite the 80-year-old singer being caught up in the holiday spirit while singing “All I Want For Christmas is You” and “Because It’s Christmas,”some Grinches on X trolled his appearance.Many made fun of his tanned skin and black turtleneck, with one asking: “Does Barry Manilow look like Martin Short in an SNL skit?!”Another questioned if he’s had work done to his face.“Plastic surgeon: what do you want lifted? Barry Manilow: yes,” the user quipped.A third X-er chimed in: “He looks plastic, too much Botox perhaps? He’s way past his prime and should finally retire and lay off the Botox.