Should we use the indefinite pronoun "she" to refer to nurses, since most nurses are female?

When referring to nurses, we suggest using the indefinite pronoun “he” instead of "she" at least half the time. Of course, "he" should not be used when it is plainly inappropriate, as in references to pregnant or lactating nurses.

Since about 6% of practicing US nurses are male today, one idea might be to use “he” 94% of the time and “she” 6% of the time, then adjust the ratio as the percentage of men in nursing increases, until one day (we hope) the genders have roughly equal representation.