“The first collection of the New Testament would have been published by the Apostles”
[[citation needed]]
“with copies being made and gathered by the church”
[[citation needed]]
“as evidenced in their widescale availability”
The earliest complete codexes that we possess are Codex Vaticanus and Codex Amitianus. Neither of which contain the modern NT canon.
So the only actual extant textual evidence shows this statement to be false.
You need to read up on Marcion. There wasn’t a ‘canon’ in the time of the Apostles.
“[[citation needed]]”
You need a citation to believe that the New Testament was written by the Apostles!?
“So the only actual extant textual evidence shows this statement to be false.”
Except that, in the case of the Vaticanus, it dates to the 4th century, and we know that the entire New Testament was in use before that time regardless of what the Vaticanus is missing, as seen by Origen, Tertullian, Irenaeus, and many others, all quoting from every book in the New Testament.
If what you said was true, ignoring all the actual early evidence, then the Bible wasn’t written at all until the 4th century.
I’m sure you would be happy with that conclusion, since you’re Catholic, but it’s not accurate.