Is Isaiah an apostle?
Solomon?
King David?
The biggest argument I have with Catholics is the insistence of apostolic succession and the papacy.
Christianity began with the Incarnation of Christ. It draws on the OT, but is not subordinate to it. The Revelation of Christ is what matters. Christ, the Apostles and the Apostelic Fathers handed down the Faith. Not Billy Bob Rolex and the Tin Pan Choir.
Protestants save for the Anglicans and Nordic Lutherans rejected apostolic succession out of expediency because their bishops wouldn’t join their rebellion.
My Lutheran ancestors in Sweden continued to believe in apostolic succession even after the Protestant Revolution.
This was especially true in Germany, the Netherlands, Switzerland, Scotland, and elsewhere in Europe.
But in reality most American Protestant sects are splinters from the Church of England rather than from the Protestant Revolution itself.