I wouldnt't call it a "craze" or a "vogue" when people have been arguing for it for over 100 years and there are now thousands of empirical research articles demonstrating that it is superior to traditional lecture. Rejecting active learning in favor of traditional lecture is akin to the 19th doctors who rejected the idea that they needed to wash their hands: https://edtechdev.wordpress.com/2014/06/03/healthcare/