I don’t think this is true. Many people, even myself (in my 60s), don’t get their news from traditional sources - TV, physical paper, or radio. However, that doesn’t mean we get our new only from social media. There are plenty of places to get news on the internet, of various reliability, which is not social media.
My daughter, 30, dumped her X account last week to switch to Bluesky. She told me, X was filled with politics and she refuses to get her news, political or otherwise, from social media. She loathes influencers of any kind, news or other, and doesn’t follow any.