Since the '20s, '30s, etc. are the same in every century, regardless of whether that century be the first in a given millenium, the '00s and '10s should also be the same in every century. Thus whatever you called the first decade of the 1900s, and also whatever you called the second one, should be replicated in the 2000s. The years of the first decade of 1900, after 1900 itself, do not have 2 aughts in them, and also 2010, 2020, etc. do have 2 aughts in them. So the choice of that gun-nut is no good, no matter how macho.
I think you would have to call the first decade the ‘aughts’ and the second the ‘teens’. Maybe I’ll drop dead before I have to worry about such things.
Ray (Why 2K. . .when you can have 2M.)