“a group of theologians meeting together, as equals of Scripture that won’t do.”
Yet it was a group of ‘theologians’ meeting together that gave you the scripture, which then the ‘reformers’ butchered removing books as they willed it, despite claiming this same council to be valid and thus the original Canon, as they consider the Church prior to their ‘reforms’ to be valid.
You can’t have the cake and eat it too, besides the scripture it self supports apostolic tradition too:
“Therefore, brethren, stand fast; and hold the traditions which you have learned, whether by word, or by our epistle.” 2 Thessalonians 2:14.
If we go back and look at history you will see that the emergence of our Scriptures is truly one of the miracles of God not men.
The Scriptures were recognized as such very early after the end of the Apostolic Era. The Muratorium Fragment will attest to it. The only books that were "controversial" are found at the very end of the NT. No council met and decided which books were "in" until late in the 4th century. The only authoritative pronouncement was made just 30 years before that and in that case only confirmed what was already well known.
You may be coming at this from the RC perspective, but ask yourself how did Jerome know which books to translate when no council had met to discuss the question. Also, if you examine history closely you will find the RCC never made an authoritative statement on what comprised the Scriptures until Trent (1450 yrs after the end of the Apostolic Era) and then they added books that were previously not considered Scripture.