It appears to be from what Reb Moshe wrote that the reason women are exempt from positive time dependent commandments is because they have less kadushah from men just like a yisroel has less kadushah from a kohen
or levi. The importance is the service to Hashem not how we serve Him. Some emphasize Torah (litvak) others Avodah (chosid) and the women Gemilas Chasodim. All three are equal since their gematria is the same תורה, יראת
גמילות חסדים.
