Original question: No.
Now, as for Admiral Yamamoto: he was a pragmatist and a realist. He knew full well, based on his time in the U.S., that if Japan got into a prolonged war with the U.S., it would lose. He did oppose the decision to go to war, and had the Pearl Harbor plan going well before the decision, as we know, but he expected a diplomatic solution. Even as late as 18 Nov, when there was a final meeting prior to Kido Butai deploying to the Kurils before sailing for Hawaii, he reminded the assembled officers that Japan's diplomats were still trying to negotiate a peaceful settlement, and that if there was a settlement, the fleet would be recalled at once. When there were protests, he demanded that anyone who would proceed with an attack even if a diplomatic solution had been reached, then he would accept their resignations.
Also keep in mind that he got the Combined Fleet command because of his opposition to the alliance with Germany and Italy. Ultranationalists threatened his life, and being at sea was seen as safer than the snake pit of Tokyo.