Paul writes that they are perceived pillars b/c he wants legitimacy for himself. It is clear to me that the apostles, the twelve, were not thrilled with his claims. It shows that in order to do his ministry, he needed at least nominal support from Jerusalem. Paul is not a neutral journalist or historian. He is advocating for his side.
I think you are going out of your way to negate Paul .James and Peter were leaders of the church. Altho they were common names, it is easy to infer that they are the same James and Peter. All three were martyrs to the faith. People did not use last names. We don't have a DNA graphic. It is not folly to accept that they are men who led the church in Jerusalem. This links Paul in some way to the Jerusalem church. Whatever his message, he could not carry on his mission without their approval. Jerusalem was central at this point. Rome was not.
You clearly want to see Paul a fool who knew nothing about Jesus. He did not know Jesus but he did know about Jesus. I don't see what your point is so important. Arguing with me, won't lead me to agree with you. Agree to disagree. Most people on this thread do not agree with you. We don't have detailed documents about what happened. This is church tradition. Tradition usually has some basis in fact.
This reminds me of the jesus never existed school. We can never now the details of what happened. Paul is not around to be cross-examined. Paul's audience thought his credentials were valid. Do you suggest that Paul and the Twelve are completely unrealted. Was Paul talking about Jesus Smith and the apostle Jesus Doe?