Paul proves apostolic succession is incorrect. He was called by Christ to preach. Paul was not called by Peter. Christ still calls men to preach today.
“Paul proves apostolic succession is incorrect...”
Incorrect.
Paul was vetted and received by the Church. This was a unifying event and there was still one unified Church.
In recent history, on the other hand, the case is very different where Satan has succeeded to bring about the presence of “preachers” who preach a different gospel, and are not united to the Church. (Again, that would include the modernized “Catholics”.)