It's not like making paper is energy free. You need to grow the trees, cut the trees using machinery, transport cut trees to factory which is under all likelihood not anywhere close, turn tree pulp into paper, package it, ship it to warehouses before it's actually shipped to the end store to be eventually picked up by a consumer. Not sure what your point actually is, if you want to compare both supply chains then you need to take everything in account, including the amount of paper you'd need over your lifetime in case you did not use any electronic device, the amount of garbage it produces, etc...