The illusion is that things haven't really changed much between Trump and Biden (or in equivalences in other countries as a general rule, there are the odd exception), even though their minds are far apart. Leaders have less control than you think. Companies are now in control, and thats actually the bigger issue. Modern society isn't in the interest of the individual, or even group, it's which companies are the biggest. There will be a natural kickback against this at some point. Maybe as the planet dies.
Then we have the echo chamber of social media, especially Twitter, which promotes a lack of proper discussion or nuance. It's probably the worst thing out there. People reference things like tweets as "news" and "facts" compared to older days of less sources of truth (which could still be manipulated). You can reinforce any crazies ideas by finding a tweet or random web page. Facebook just makes you think everyone is like you, when you're crazy, as it's good at finding crazy posts for you to read.
This all just promotes divisiveness and group politics which is always shallow and incorrect. The left criticises the right extreme and visa versa with the ignorance of pretending anyone slightly leaning towards either is part of it.
It's quite a shame really, letsrun is a bit of a mirror to it all really. It's hard to have proper discussions and debates, lots of numpties having more importance than is warranted in the name of anonymity, yet there are nuggets of intelligence, compassion and resourcefulness there (sometimes).
So, is it all more crazy now ? I'd say yes it is. Simply because before, people were too busy getting on with life to care about the nutty stuff. People had to work hard to put food on the table, rather than being a keyboard warrior. That doesn't mean things were necessarily better, there was a lot of wrong in the world, just less crazy.