I don't remember it being this bad. At least the UI styles issue really isn't a big deal, Samsung's one UI style is essentially just the stock Android UI style,

I don't remember it being this bad. At least the UI styles issue really isn't a big deal, Samsung's one UI style is essentially just the stock Android UI style, but with a couple colors changed and maybe some larger fonts. All the buttons and interactive elements are in the same place. And about the duplicate apps, it depends. Sometimes it actually makes sense (e.g. the two email apps, you use Gmail for your Gmail accounts and the other email app for everything else). Sometimes it doesn't :/. But either way, it's an issue that I can easily solve myself. I can just uninstall/disable whatever apps that I don't use. Or I can install an alternative launcher and hide the apps. Or I can simply ignore the extra apps and pretend they don't exist lol. It's a one-and-done fix. I can't do the same with the UI though like what OP is talking about.