The type of people who understand and will use (collaboratively or otherwise) the tools available to proactively filter what information reaches them are going to generally fall into two categories:
people who are not particularly susceptible to misinformation
people already captured by misinformation (who will use such tools to help avoid cognitive dissonance, usually with block lists curated by their thought leaders)
I think the misinformation problem is, at it's root, a shortage of trust in institutions (fueled partly by actual failures, but more by deliberate attacks). As such, there is no systemic solution that people who most need it won't go to great lengths to circumvent. But combatting misinformation is a numbers game, and the largest number of vulnerable citizens are low-information voters who are not particularly radicalized but simply react to whatever reaches them with far too little skepticism.
For them, I think some simple, low level and easily circumvented internet filtering would do a world of good. Like just have our ISPs serve up DNS redirects to government-hosted pages proclaiming the site is blocked and detailing why, with links to things like private, non-partisan analysis as supporting evidence. Circumventing this is trivial, but the initial hurdle is good enough to redirect a sizeable amount of low-information, unmotivated users somewhere more productive or at least better moderated. It's also weak enough to minimize the inevitable complaints about censorship.
I don't like censorship myself, but I'm past believing we can maintain national security with none at all. People who are reasonably well-informed are finding their collective future just as threatened as the low-information voters inviting foreign influence through the back door.
From left, American real estate developer Donald Trump and his girlfriend (and future wife), former model Melania Knauss, financier (and future convicted sex offender) Jeffrey Epstein, and British socialite Ghislaine Maxwell pose together at the Mar-a-Lago club, Palm Beach, Florida, February 12, 2000. (Photo by Davidoff Studios/Getty Images)
It's real unfortunate, but bad actors like this will be dime-a-dozen for most of this year, especially when it comes to using Carney as the subject. And I fear no amount of warnings and corrections will make a serious dent on fixing it.
What should be done instead is flooding the internet with fake pictures of PP that are technically impossible, but so real that people can't distinguish them as being fake without examination. For example, having him shake hands with Hitler, or bumping shoulders with Bush Jr under the Mission Accomplished banner on the Enterprise.
Force people to become acutely aware that any picture, no matter how perfect and realistic, can be fake. Make them doubt their senses and think that there are so many fake pictures, it's actually less likely to find real pictures than fake ones on disinformation platforms like X.