The espistole known as "Hebrews" wasn't written by Paul - there's a wide consensus amongst scholars about that. But it was written from a Pauline prespective. It was likely written by a well educated greek speaking collaborator of Paul as some sort of phostumous work of Paul, or meant to be regarded as such. The ruthless attack to the Law and and jewish rituals as having been superseeded and made obsolete by Jesus' priesthood in heaven is entirely a Pauline vision. But this vision was in itself build in opposition to the original core of apostles who walked with Christ, who were based in Jerusalem.
Since the letter makes no reference to the destruction of the Temple; it's written in a more refined way than the other genuine letters of Paul; Timothy is referenced as still being alive (13:23); and Clement of Alexandria makes reference to it in 95 CE; it is believed to have been written shortly after Paul's death and around the time of the breakout of the first judean war; therefore 65/66 CE.
The reference to "obedience" to those taking the lead among them without making also a reference to the apostles in Jerusalem (James the Just brother of Jesus and John son of Zebedee, or Judas brother of Jesus, the leadership of the mother congregation in Jerusalem) all the while defending anti-Torah ideas that were completely at odds with the general orientation of the church in Jerusalem - therefore, apostate - is a clear attack to the orthodox christianity as represented by the jamesian tradition. It was Paul that established episkopos and diakonos in the congregations, not James. It was Paul who appointed travelling overseers to make these appointments in the congregations that he himself had established, not James.
You have to understand this appeal to obedience to the local "authority" in the broader context of the struggle between two different and antagonic apostolic authorities: the twelve, and Paul. If someone is still in the mind frame that the church in the first century was a unity, that someone still has a long way ahead to educate himself/herself.