Jerry Bails’s 1965 article was not the first time the creation of Batman was addressed in print. Almost twenty years earlier, in Real Fact Comics #5 (1946), DC had published a different telling—except it was a preposterous fake.
According to that story, Bob first drew Batman with the help of a (suitably muscular) friend modeling a now-familiar costume . . . made by Bob’s mother.
You can imagine what Bill Finger thought of this: the same as you.
Only more venomously.