Billie Eilish has criticised artists who release multiple vinyl formats to boost album sales, calling the practise “really frustrating”.The artist made the comments in a new interview with Billboard, where Eilish and her mother Maggie Baird discussed their history of environmental activism – and in particular, their work towards making vinyl more sustainable.“We live in this day and age where, for some reason, it’s very important to some artists to make all sorts of different vinyl and packaging,” Eilish began, “which ups the sales and ups the numbers and gets them more money.”After Baird interrupted to point out vinyl sales “counts toward No.