Sorry, I went to take a shower and do my thing afk.
Irenaeus was dealing with “heretics” who were debating about the legitimacy of Orthodox scripture vs everybody else’s scripture. Here are a few examples of Irenaeus either bemoaning that early certain Christians don’t acknowledge the Orthodox canon or including things they don’t.
So, yeah. Debate on what was and was not appropriate scripture has been going on for a long, long time, at the latest, in 180AD, but probably much sooner.