You're critiquing without providing a possible solution or change. You seem like you have a better idea ... I'm curious for you to show us, or describe in detail what would work better.
The icon, app folder/column, list, or tiles has ALL been tried and used on Desktop computing from Unix/BSD to macOS 5:macOS/OSX 10.15 to Linux. I've yet to see ANTHING (even in Linux Gnome/etc) change that. Heck not even within WindowsCE/Windows Mobile/Smartphone Edition/PocketPC Edition, Symbian S60 (2nd/3rd edition) Symbian OS, BlackBerry OS/BB10, PalmOS (even the Palm Cobalt which never saw the light of day), nor UIQ (also based on Symbian/EPOC) provide any change to this.
So ... Im VERY curious for ANY UI designer to show us something fresh, fluid, efficient and yet powerful to go another 10yrs into the future.
Between the average non-typical user, anyone with motor control limitations or that require accessibility adjustments/features, or a power user or support staff will need to accept such a change as being 'better' in their own personal views.
I kind of see this as the argument in the 90's and 2000's where Windows users moaned and rolled over painfully about the 1-button mouse yet very few average user understood or known of the powerful keyboard shortcuts in macOS classic or OSX yet only to DEMAND multiple gestures in a single trackpad button laptop that Apple brought. I'm STILL learning.
I made the argument that keyboard shortcuts was much more powerful and efficient in BBOS/BB10 over iOS as I flipped flopped between both - I.T. Support field - and yet ... that did NOT matter. familiarity, stability, and efficiency in terms of ease of use and reliable support when guiding anyone using the platform could readily understand and apply. iOS won by a huge margin.
So much to consider ... but I'm all ears and eyes. Maybe we'll see this sooner than we all expect. When we do, rest assured many of us will go bonkers until it becomes second nature. THAT right there is why Springboard has NOT been changed nor replaced ... the users ability to use and adapt to it as second nature regardless of experience or background knowledge of the system UI. It's why 2yr olds can use it or aging adults, even those with dementia can use it as second nature.
My vision or idea is an improvement and not a complete overhaul. And I am not a designer. But I hate clutter and think there are elements of the UI, especially folders which a not working and are visually awful.
My solution is outlined in another thread rather than this one about Springboard and App Centers or Hubs. The best term might be Home Screens or App Screens. Leave it to Apple to name it.
My idea is that when you unlock your phone you see a clean wallpaper with the dock at the bottom. A simple swipe left to right brings up widgets as it does now but preferably better implemented with two columns where a widget expands to touch or haptic.
The dock at the bottom has 4 icons or 5 if you want. Consisting of at least Wallet, Home, Apple TV, and an icon that looks like the old home button or maybe the account silhouette.
The Home, Wallet, and Apple TV icons act as folders, or more precisely home screens/app screens. They keep their existing functions but at the bottom like in the current Home and Music app is 3 or 4 items in a mini dock or tabs. Home currently has Home, Rooms, Automation. One of these in each of these apps would say Apps. In Wallet I would say you get Cards, Apps, Passes to separate cards from passes/tickets. When you tap on tabs you get a Home Screen (populated from the bottom up and scrollable if filling the page) of apps that are related to the app they reside in. Home would feature all your smart home type apps, lighting, alarm, cameras, locks, etc. Apple TV would feature all your media apps for steaming etc. HBO Go, Netflix, Disney+, etc.
Wallet would likely be the biggest and like the App Store require categories for Food, Banking, Shopping. By putting all these apps into these apps as folders but not relegating them to 3x3 page after page folders, you get instant access to categorized home screens for those type of apps, especially the Wallet which often contains so many apps you infrequently access.
The final dock app is essentially you. A tap on that shoots up a stack of apps from it, that you order. Phone, Messages, Mail, Safari (or other browser) that you designate for quick access.
Then there are the app screens or whatever they are called. Swipe right to left from your main screen and a spaced list of words (as you have named them like you would folders) appears on the right edge ( though there certainly could be another implementation). Tap on one and it takes you to a home screen rather than folder of that collection of apps. However, given how many app would reside in Home, Wallet and Apple TV along with your Account shortcut, I don’t think you would need many of these.
It is also time to give users the option to stacks apps bottom to top instead of top to bottom as screens have gotten bigger. Or to have apps enjoy free placement.
You may disagree but that is my idea for decluttering and making appdom more manageable.