Hold on. Your statement of the rest of the Apostles would have… and the same authority was given to all the Apostles… implies something that wasn’t said in Sacred Scripture. Thus, a violation of Sola Scriptura.
As for Our Lord saying that this was not revealed to you by flesh and blood; but by My Heavenly Father… That tells me that Saint Peter had a special role to play as the first Pope. Thus, the Father revealed it to Saint Peter.
Now, I don’t remember if it was your post or someone else said that Saint Peter was supposedly only primus inter pares: No. Saint Peter was the head of the Church. Bar none.
As for the course of this thread: The Protestants here have diverted from the question of the “ validity “ of Sola Scriptura and the final authority of its interpretation.
I offer this point: Sola Scriptura is self refuting. Nowhere in Sacred Scripture does it refer to itself as the only infallible guide to faith and morals. The Church was originally based upon the core of oral tradition with several writings floating around the churches until the Church codified Sacred Scripture in the 4th or 5th centuries. The role of the Pope and the bishops to determine the proper interpretations of Sacred Tradition and Sacred Scripture was accepted and understood by the Church as a whole and divinely decreed by Our Lord giving Saint Peter the keys to the Kingdom and the Descent of the Holy Spirit at Pentecost. The Magisterium is guided by the Holy Spirit when it interprets and determines dogmas to be held by all the faithful. Think of the Magisterium, the councils of the Holy Father and the bishops as a Holy Spirit led final arbiter of interpretation and dogma that ensures stability, unity and orthodoxy for the entire Church. Without that; the Faith and what to believe; becomes a mad free for all subject to the vicissitudes of individual interpretation and private revelation. Remember: People can be misled and deceived by evil spirits masquerading as the Holy Spirit.
Sola Scriptura, I think; leads to the same legalistic concern for exact wording of Sacred Scripture that Our Lord condemned the Pharisees for. As well as throwing out all authority over interpretation and leaving it, unfettered; in the hands of unlearned inexperts to interpret for themselves; this leading to the plethora of denominations that Protestantism rapidly devolved into. Then consider Luther: He strove, with much condemnation and vilification toward the other rebels; to maintain orthodoxy among his followers while “ preserving “ the principle of each man his own priest. Hypocritical and contradictory, IMHO.
Thus, harming the unity that Our Lord prayed for us to have.