Yeah, in comics, the word "infinite" is usually used as a hyperbole.
We can find the same thing, in DC
A few examples.
1-In infinite crisis, it was said that there was an infinite number of universes.
-The anti-monitor claimed that he destroyed an infinite number of universes
-Later on, it was reviled that he actually destroyed 1 million universe
-Also, 5 universes were spared. How can he claim he destroyed an infinite number of universes minus 5? Infinite is not a number
2-In rebirth, it was claimed that the dc universe now contain an infinite number of universes.
-Yet, later it was reviled that the new dc universe contains only 196 833 universes: