There are some factors at play here if/when they incarcerate Trump.
As a public figure he would have to be segregated from the general population to prevent someone from hurting him as a way to get publicity (or revenge for some of the destructive policies he enacted). I personally wouldn't care if he were beaten to death in the prison showers but the US does have some responsibility for keeping prisoners safe. (He is similar to serial killers or child molesters in this regard)
Because if his MAGAchud followers, they may need higher security where he is kept to prevent any of them from trying to help him.
Also because of his cult, they may need to take additional measures to prevent him from doing anything to incite more problems, like passing information to outsiders.
He is a moron, but there is a chance he may have remembered some classified information from his days as president, so steps might be needed to prevent him from disseminating that information.
Nothing is insurmountable. But it may require some modifications to various prison buildings and/or changes to protocols to house him. (Still worth it in my opinion even if it costs the justice system a little more)
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