They always were. Problem is that people generally think the others are the ones being manipulated. Partially true...
Our democracy did actually function better before AI, social media and smartphones than it does now.
Everything was not always as bad as it is now. I know that's heresy and thoughtcrime to suggest, but it is true. Things weren't always perfect in the past, but in many ways they were better.
AI is useful in niche circumstances but we could absolutely stand to get rid of 99% of its "use cases."
Social media enables people to network and communicate in ways that would drastically harm freedom of expression if it were removed, and it's so ill defined that banning or regulating it could creep into banning or regulating most communication on the web. Same with smartphones - having a communication and computing device on hand is useful, the problems aren't with the existence of the devices themselves.
The problem with an AI MAGA influencer isn't that social media exists, or that cellphones exist, or even that AI exists, it's whatever deeper cultural and social problems allow MAGA to be a thing in the first place, and AI to be influential. Just banning all the modern things is an easy solution but not necessarily the correct one. I think that we can still have a modern computing and communications infrastructure including social media and smart phones and a working democracy as well.
AI detection probably needs to be added to computer literacy curricula (maybe it is, and it is just too late for adults). Of course, it is a political strategy of Republicans (probably conservatives in general) to suppress access to education, as the Republicans enjoy a growing advantage with white non-college grads.
https://news.gallup.com/poll/248525/non-college-whites-affin...
Sure, the internet had, say 20% noise back before spam, shills, and propaganda took over. Now it has 50% noise, maybe even 80%. It's still (barely) usable. But what happens when the noise is 99% of the content? 99.9? That's not "making it slightly worse", that's a phase change that makes it completely unusable.
The mass social engineering is nothing new. The whole hierarchies of human relations are based on deception.