Complex sentence: Countering the image of self-deprivation projected by vegan straight edges and animal rights activists, veganism was promoted as glamorous; in 2015 the editor of Yahoo! Food declared that it had become "a thing".
Split into simpler sentences: Countering the image of self-deprivation projected by vegan straight edges and animal rights activists, veganism was promoted as glamorous. In 2015 the editor of Yahoo! Food declared that veganism had become "a thing".