Frankly, the very mention of “temple virgins” seems related to the gnostic premise that the temple was inspired by Baal worshippers.
Hebrew worship deliberately excluded women, and the stated reason was that Eve was deceived. (Adam was no prince either)
Respect for virginity is common to the Jewish culture, and authentic Christianity, as well as Gnosticism and Islam, so it is not specifically indicative of Gnosticism. Oh wait! Am I gnostic? I must be...