What you're saying makes some sense - a television broadcast, say, requires effort from a lot of people to produce - and, previously, expensive special equipmen

What you're saying makes some sense - a television broadcast, say, requires effort from a lot of people to produce - and, previously, expensive special equipment to broadcast, though now TV content is often streamed over the web - so it has a level of credibility, the TV news at least can't be spoofed by one person in their bedroom on the other side of the world. (Note that deepfakes may be changing this). But the world we live in is full of "web services that let people post whatever they want at any time". News from Twitter may be weird but many people want to get their news from the BBC website, or the New York Times, or Reuters or whatever. Or their own government's websites. Just web services that people post from - presumably with levels of editing and checking but all presumably with security flaws that could bypass them. It's not clear exactly what you're asking for. A technological solution involving careful checking of cryptographic signatures? Or some sort of super-expensive-to-spoof source of all important news?