****are you claiming that it doesn’t say Peter is a Rock****
The real question is why does Jesus change Simon’s name to rock? Why does Jesus call Simon rock if the rock Jesus meant is that of Himself or of Peter’s faith?
Luke 22:24 And there was also a strife among them, which of them should be accounted the greatest. (obviously the Apostles themselves had no idea that any one of them was superior to the others.)
25 And he said unto them, The kings of the Gentiles exercise lordship over them; and they that exercise authority upon them are called benefactors. (Jesus begins by making a negative comment about authority)
26 But ye shall not be so: but he that is greatest among you, let him be as the younger; and he that is chief, as he that doth serve. (“But ye shall not be” looks like more of a command not to have a hierarchy then anything else.)
Jesus obviously didn’t explain to them that He had made Peter the leader or anything else. He also clearly told them that it was not to be with the Apostles.