At least that is all I can see
Protestants do reject the authority of men over them. Instead, we praise the authority of Jesus Christ over us, as given to us (and to you) in Scripture, anchored solidly by the Holy Spirit.
No king but Christ.
"And they were astonished at his doctrine: for he taught them as one that had authority, and not as the scribes." -- Mark 1:22
"Neither is there salvation in any other: for there is none other name under heaven given among men, whereby we must be saved." -- Acts 4:12