He didn't "order a ban" (which is a pretty weird notion and wouldn't make much sence when Gail Tilden still tried to get the game released after SMB2USA came out). His job was to review Famicom games to determine which sucked and which were worth bringing over, he thought Lost Levels sucked, told NOA boss Minoru Arakawa as much, Arakawa trusted his judgement and request the Japanese headquarters to rejig a weird FDS platformer they had laying arond as Mario Mania was still in full swing and they wanted to keep the franchise relevant.