It appears to me that the Friar sees men and women in their traditional perspectives. Two places in the text particularly lead me to believe this. In Act II, scene iii, the friar notes about Romeo:
young men's love then lies
Not truly in their hearts, but in their eyes.
This is so typical of young teen boys. They are all about looks and physical attraction. So, the friar seems to have a strong handle on the reality of how men act in reference to women.
Later, the friar criticizes Romeo for crying like a girl. Girls could take this as a slam, and so should Romeo:
Art thou a man? thy form cries out thou art:
Thy tears are womanish; thy wild acts denote
The unreasonable fury of a beast:
Unseemly woman in a seeming man!
This occured in Act III, scene iii. Three times here, the friar has called Romeo a girl. This means that one can infer that the friar takes the stereotypical approach to male/female roles just like everyone else.