Letting people vote on truth would be horrible. Look what they did in the last general election! (granted the options were terrible, but so far a large portion of the population has been accepting lies for some time as truth)
I think more interesting would be a site that was well researched with information vetted by professionals, with references etc, (something like Snopes but for news) but before you got to see the answer to whether the thing was true / accurate / whatever, you had to vote (anonymously) what you believed... then those who were misled can see just how many others were misled too, that they're not alone, and it's a big problem.
But last general election was actually a result from what's happening with medias. Tons of false information was shared on social networks which contributed to steering the population toward having a certain opinion.
Elon Musk on Twitter