Trump is definitely not autistic. That isn't even what autism means. And calling it a "light mental illness" is very stigmatizing, misinformed and hurtful. Autism is a neurodevelopmental condition that just affects how the brain develops (in this case, making it more difficult to socialize and hyper-focusing on specific interests, usually) which has nothing to do with mood disorders or "being weird", which are both seperate things.
Just being hyperbolic or saying unpredictable things doesn’t mean someone has autism. In fact, Trump displays a lot of traits that contradict autistic traits found in most people, like rudeness, narcissism, impulsiveness and manipulativeness.
This isn't an attack on you, I'm asking you to fact-check and to think ahead before talking to people. I'm most confident that you probably don't know what the term means, so I'm not gonna press you any further in that subject.
As for Alcatraz, that's not how it works. The thing with that prison is that being located on a remote island, even if it's inside the Bay Area, means that you need boats to ship goods to the prison, which isn't cheap. And even when it's easier to isolate prisoners on an island, good security and enforcement there makes that factor obsolete. So, it was decided, rather sensibly in my opinion, to close the prison since the high cost of filling boats with fuel, loading them with supplies, weapons and products, and shipping them 1.25 miles to Alcatraz isn't worth it, even if it meant putting out of commision one of the most infamous prisons of all time. That element of Alcatraz will always be expensive. And besides, it has a spiritual successor as Marion Prison in Illinois, where they spend considerably less money on compared to Alcatraz.
Democrats are as culpable as Republicans, I agree, but I said more so Republicans since 1. there have been more Republican administrations and 2. there have been more scandals under their presidence (Watergate, War On Terror, 2008 housing crisis, WIN, Katrina response, Iran Hostage crisis, beginning of COINTELPRO and ignoring the AIDS epidemic are notable examples). Whilst Democrats say they are more keen to change things, that's only in theory, as of recently. Presidents like Obama and Clinton were too worried about harming the U.S. image to actually change anything substantially or address the problems extensively (like big pharma), and Biden had the entire COVID-19 debacle.
He is very hyperbolic, but that's on purpose to rile people up (like when he said that they're eating cats and dogs in Springfield, Ohio). He's old, yes, but not old enough to not know that people will get angry at what he says.
Also, there's a reason why Alcatraz closed in the first place, and that is because it's too expensive and not worth it to maintain a prison on an island. It would've still been open hadn't it been for that. So opening it again would just be burning up money for no reason. Criminals can go in prison somewhere else.
And you're right about how this administration isn't really that different from previous admins (most Republican ones anyway), it's just this one's more selfish and more inexperienced. But I can tell you that Trump isn't better because of his announcement that he'd reduce med cost, which he isn't actually acting on, it is actually more likely a publicity stunt. He's worse in almost every metric, it's almost dictactorial.
If you haven't noticed, Trump usually publishes inflammatory speeches to distract people from what the admin is actually doing (like the ban on American movies or when he said he wanted to reopen Alcatraz). It's the administration and the giant companies that are really "behind the scenes".