Corn and wheat are essential food items. There is no "digital alternative" to corn and wheat. No one should need to buy a physical book/newspaper in this day and age.

These wood pulp tree farms are producing luxury consumption items for the middle and upper class. Working class people don't read physical newspapers

Yes, and industrial farming is a known major problem that wreaks havoc on the environment and in the case of animal farming at an industrial scale commits horrible atrocities. So yes, you are right... it is not just pulp trees at issue.