WIY, I agree with you that secular newspapers or magazines are sources of tumah. THEY ARE TUMAH. Who would want to bring tumah into their house?
While I’m not going to say as a fact that the internet is kosher as it was assured by Rabbonim, but there are choices out there. For example I’m not even totaly connected to the internet but I am on a network that allows me EXTREMELY limited internet access. People can have filters in addition to making the right choices of what sites to visit.
However, goyishe literature is saturated with shmutz and there’s no dodging it. It’s right in front of you. If someone wants to be updated on the news, besides for reading the Hamodia daily, they can listen to the news on radio.