Anyone who spreads opinions that aren't actually the views they hold should be required to have onscreen disclosures that 'the views expressed are not those held by the person expressing them'. You shouldn't be able to just grift off of things you do not believe yourself. You should be able to say those things still (free speech) you should just be compelled to have a disclaimer you do not actually believe them.

There's too much financial incentive to spread disinformation, if you can make money by posting on social media and attracting a following on your disinformation there's always going to be someone ignorant/innocent enough to fall for it.

I can't see what else humanity would need to develop as defenses, we can access nearly all information that exists, almost instantly, from the convenience of almost anywhere. The problem is to knowing how to parse so much information, even more when there's conflicting information where nuance and critical thinking are required.

Accepting that there's very few absolute right answers, that the real world is much more "depends" than "for certain", and stil being able to navigate it all to reach a conclusion that aligns with the best probable answer demands quite a lot more quality education than the vast majority of humanity has access to.

I don't think humans will ever have a defense for "trigger my amygdala and tell me what I want to hear."