2 Peter is the New Testament work which is the most universally acknowledged to be pseudepigraphal – in other words, an example of someone writing in the name of someone else, pretending to be that person.
Even some relatively conservative scholars acknowledge this fact (although obviously not all – but even they have to admit to the issues that lead most to conclude the work to be inauthentic). The Greek is closer to what we find in the early church fathers than to anything else found in the New Testament (including 1 Peter).
If the first two words, “Simon Peter,” standing where the author’s name ought to be, are not literally true, how can one base an argument for a literal flood on this work?!