I'm sorry, but those people have access to the exact same information I do.

No they don't. Or rather, the ones I've talked with extensively had no idea what was going on; media they genuinely trusted had given them this very incomplete, bizarre, and specifically constructed view of the world that was perfectly believable to them, but which bore absolutely no resemblance to reality. In particular it even has specific features to make it harder to be able to break yourself out of, make you resist learning new information that might challenge it. If you haven't had your brain inside that type of box or talked extensively with people who did it's sometimes hard to appreciate how pervasive and reality-defining it can be.

So like think of all those guys who went down to the border expecting there to be this army of Mexicans coming over and terrorizing the whole town, and they were ready to go down and help sign up for their patriotic duty to help, and they were surprised and confused when they got there and it was just a normal town. It's not like they were like "oh okay let me start shooting any Mexicans I see on the street because that's my main goal" -- they had a perfectly humane reason for being there, in their minds. They had a perfectly humane response (like "wtf these guys lied to me, what even is going on here"). It's easy to laugh at them because they were so wrong, but they really believed it. Because all the news they watch and all their friends they talk to and all the internet they observe told them that's what's going on.

I definitely will agree that there's a way-too-large minority that's like "hey I always wanted to shoot Mexicans / shoot up the Ramadan celebration / kill my family member who I suspect of being a Democrat." I'm not trying to give everyone a free pass. I'm saying that the root of it for a lot of the rank and file is being duped, not being evil.

(Not that that makes them any less dangerous of course)

I hate the terms "both sides" and "America is divided" because it implies that there is some form of symmetry to this madness. This is not the case.

Fully agree on this part. The movement as a whole and its leaders are extremely dangerous and evil, and the media for the most part is looking for any excuse to avoid saying "these guys are Nazis WTF how do we stop them," and "both sides" is one convenient excuse.

Trump supporters can come back to earth any time they want

Well, but they can't. Not on their own. They're either going to realize the reality through some outside force helping them see the truth, or they're going to keep growing in numbers and fervor until their leaders can use them to enact a for-real fascist takeover.