The golem that the old man was preparing to become his new body was far from a normal golem. It was definitely his masterpiece, but it would only work if a person perfectly transmigrated to it, becoming its spirit due to how it was made.
The golem was at the peak of Rank 9, far stronger than the old man himself, who was barely at Rank 9.
If he could have used that golem as a normal one, sending it to the Holy War would have them win before the Law Masters went to interfere. Of course, he wouldn't be able to treat that golem as a disposable one even if he could control it.
"What do you think? This golem is the pride of my life."
That golem wasn't something he made in a few years because he used a fifth of his life working on it. That golem began being created far before Shiba was born.
