There's a sentence (or extract of one) in need of context, by that arguement I could expect the MC to fix everything with the Infinity Gauntlet
That aside, I agree with you that, in fiction, exaggerations and contrivences are possible, for example, that Josy, a girl who clearly grew up in the same town as him and lived within cycling distance, would have a secret girlfriend who just
happened to be one of the first people he met at B&R and, through a series off bizarre circumstances, just happened to end up living with. Nevertheless, there is a point at which a story goes too far and MC being in any way capable of solving Quinn's problems beyond what I already stated is it for me.