Unless God is a moron or thinks we are.. Jesus, as always, was making a point.. and the point was NOT about Peter..
Indeed, the point was why Peter was blessed. Jesus said "Blessed art thou ... for flesh and blood hath not revealed [it] unto thee, but my Father which is in heaven."
God is the Rock, hence the metaphor/nickname for Peter - the first to receive that direct revelation, that Jesus is the Christ, the Son of the Living God.
= = = =
INDEED.
Thanks tons for your many blessings toward me by your many labors hereon and your faithful prayers and encouragements.