I don't know of a solution. I don't think even identity verification will meaningfully solve this. People will get hacked, or provide their SEO-spamming agent with their own identity, or purposefully post fake videos under their own identity. As it becomes more normal to scan your ID to access random websites, it will also become easier to steal people's identities and the value of identity verification will go down.
Agreed. The sphere of trust around each of us will shrink back to only those in our physical proximity. Outside of that, no one can be trusted.
People don't get hacked - devices get hacked. So all we need is a better chain of trust between two people. This is not a technology development problem as much as a technology implementation problem. And a political problem