I’m not sure. The skills required to speedrun and do a manhunt are very different. In a speedrun the point is to just: go fast. You can die, you don’t have to plan traps. In a manhunt you have to always be prepared, you should get armor if possible. Manhunts also have an element of just being able to fool your opponents, lie to them, make them believe what you want them too. I think it would be pretty hard, if not downright impossible, for someone to start at three hunters without any training or gradual progression of difficulty.
Just take a look at the manhunt illumina and dream did. Illumina is an excellent speedrunner, better than dream imo, and he’s very polyvalent. But he didn’t completely dominate in this manhunt because it involves so many other skills like traps and pp, and things like reset efficiency, zero-cycling, 3-bedding, calculated travel, e raying or any other way to find a structure fast are basically useless in a manhunt