Part of it is that they genuinely don't watch or care. They just learned they like trump and will continue to say so. Never forget just how many people didn't even know Biden wasn't fucking running last year. There has been a massive culture (on Both Sides) of "don't watch the news for your mental health" that just puts people in isolation chambers where they occasionally hear something.
And the other aspect? He is them. Boomers are increasingly senile every single year and he is a boomer ass boomer. But also? Just look around on social media or in stream chats and so forth. A LOT of people sound like they speak English as a Second Language... until you realize they are making references to nickelodean shows and may even have comments or posts outright saying they are a native. They just are fucking illiterate (and this applies from boomers on down but is just a major crisis for genz/alpha because they might have a chance).
Also odds on someone thinking they are "witty" for saying this is "TLDR"? Because... think about the implications of "you talk too much" as an insult.
And that isn't just their illiteracy. We mostly tend to skew middle/upper-middle/upper class around here. Spend some time actually communicating with "support staff" (e.g. custodial) or even talking to someone at a supermarket or fast food joint. The "Gen Z Stare" is definitely a thing but it isn't just Gen Z and it is very much people who do not know how to communicate or articulate a thought literally locking up. THAT is trump.
I remember back when the problem was that people glazed Jed Bartlet and it had to be explained to them that real human beings don't have script writers to make every single word they say deeply beautiful and intellectual. Now? People would hunt Martin Sheen down for daring to make them feel inadequate.