"And now I, Moroni, have written the words which were commanded me, according to my memory; and I have told you the things which I have sealed up; therefore touch them not in order that ye may translate; for that thing is forbidden you, except by and by it shall be wisdom in God."
Ether 5: 1
Moroni then speaks directly to Joseph Smith with specific instructions. He tells Joseph to not touch the plates in order that ye may translate. That is forbidden. The Lord and through His wisdom will show Joseph the order and the process to follow. Even though Joseph might have wanted to follow a different order, he was told that there was a specific order to things he would translate. Joseph was warned, but he was still free to choose. Just like the commandment given to Adam and Eve who were forbidden to partake of the fruit. They still had their agency and were free to chose. Despite being told it was forbidden, Adam and Even partook. They didn't wait for further light and knowledge as promised by the Father when He said that He would visit again and give further instruction.
Too many times, we are not patient for further instruction. We should avoid what is forbidden, wait upon the Lord and be obedient to what he commands.