> To believe that the AI companies aren't flooding all the social media zones with propaganda is disingenuous.

You don't use "believe" with "disingenuous": it literally makes zero sense.

If people honestly believe that, they may be naive. Or they can be "disingenuous" if they're not being sincere. But if you just say what you believe, you're sincere (and maybe naive), and hence cannot possibly be disingenuous.