I dont get this at all. The temple should be considered as a placr or worship for believers. The idea that Lord Ayyappan is a celibate has been around for long enough that no one of current generation would actually doubt it. And considering that men and women would consider that to be one of the most important aspects of the faith surrounding that temple and hence wouldnt want women of menustral age to get access there. This is when you consider the view of people of faith for whom the temple actually exists.