[hombre_fatal]

I think your hypothesis is defeated by how people take screenshots of text (captions, headlines) at face value on Reddit, Twitter, and other social media. You can scroll through all the comments and you won’t find a single person asking for a source, just people reacting to some text. If people don’t have an immunity to a screenshot of text that claims something, how are they going to have an immunity to Photoshop and deep fakes?

[autoexec]

You don't even need a screenshot for that. Any text online, even just a comment will be taken at face value by a certain percentage of the population. The general gullibility of people or their susceptibility to disinformation is always going to be an issue. Even for people like that who just don't question things they see (especially when they want to believe them) I'd bet if you pressed them they'd admit to being aware of photoshop and of just how easy it is to fake a screenshot of text.