Thats the point — the uterus also has nothing to do with urine, but actually does interfere with how often women have to pee.

Men’s reproductive organs don’t interfere with their urinary tract because they’re external (except for the prostate, which does join in on the bladder-bothering fun as men get older).

Women’s reproductive organs do interfere with the urinary tract because they’re internal, so they apply pressure on the bladder and just generally take up space that would otherwise be occupied by the urinary system and other internal organs.

I do mean that last bit literally — a friend of mine had a hysterectomy, and it took some time for her innards to adjust to the extra space.