What Catholics need to understand just as many who are not Catholic do is that God used Judas, Balaam’s donkey, and many apostate and evil people to fulfill His purposes. The fact that God used them doesn’t make them good.
It doesn't make them right either.
Compiling the books of written Scripture together in one handy book was bound to happen eventually.
It's not a rocket science kind of decision that needed to be made. I'd say it was inevitable, really, and no credit goes to the one who did it first. They don't have a corner on the good ideas market nor does that give them any authority over it and its interpretation. All those claims following taking credit for it are a bid for a power grab.
The Catholic church wants to control everyone and will make any claims and use any means to justify it. History bears that out.