Yes, they do.
They witnessed everything the rest of the world did throughout Trump's first four years. They saw the malicious undermining of economic growth, his constant display of immoral and embarrassing behavior, the social perversions on the domestic scene, and his ineptness in foreign affairs. They all witnessed his attempt to steal the election in 2019, in 2020, and his use of a mob to try to steal it in 2021. They have all seen the court cases that list out Trump's many offenses and the wealth of evidence stacked against him. They have all heard or read about how most of his former Cabinet warned America of who and what he is. And they have certainly heard every denigration towards the military, every derogatory term used to belittle people, and his gross behavior behind microphones. And there response to everything was "yes, please."
They know who they have built a cult of personality around. Some will say that Trump is simply a means to an end. But this is a lie. They overwhelming bowed before him in the Republican Primaries. They could have moved on and at least pretended that conservatism mattered to them again. But they didn't. Through Trump, they know they can channel as much far-right agenda into the mainstream as possible. They can ban and burn whatever they want. They can ensure that minorities and women know their place. They can freeze out immigration. They can push as much Christianity into public schools and government as possible. And when Trump's lawyers argue to their right-wing Supreme Court that Presidents should not have term limits, they will urge him on with enthusiasm. Oh, but tell them that the German conservatives of the 1930s played this same game with their own strongman and they will seize up in denial. You see, they are allowed to behave as depraved as they wish while supporting their neo-Nazi and white supremacist elements, but if you dare warn them, you are wrong. It's best to accept that Trump is America and raise that Trump flag and replace the Star Spangled Banner with the J6 Choir.
They know exactly who they elected. And, yes, he absolutely represents them. They are America anymore. There is no coming back from this.