Because M$ is determined to make impossible to modify their awful GUI. They are full of themselves, making a GUI completely lacking in contrast between various elements making it very hard to read, unless you have 30/20 vision.
At 66, it's not my case!
The Insider site says "we listened to you to make Windows better", but all they did it was to make it easier for their support.
Also, they had the brilliant idea to make a new scaling system system to work better with tablets (who cares?) and make a shitload of legacy free apps fuzzy with custom scaling on a high DPI monitor, including their own control panel.
It took them 3or 4 years to correct that, and they did it the worst possible way requiring a manual setting on each concerned EXE, and again in case of upgrade.
Fortunately, the DPI Awareness freeware takes care of it, but I would not be surprised if it's become harder on W11. They don't care making thousands of free apps incompatible, they want you to lease their own instead. Same as Firefox who made unusable thousands of third party add ons overnight by removing a very powerful but hard to maintain add on API, because people are sheeps, and only a few % want to customize their browser to make it 10 times better than the completely sterilized one.
My apologies for the rant, it drives me mad to see advanced users thrown out the window (pun intended!) because having everybody using exactly the same thing is easier, and less costly, for support.
Only Windows Blinds, DPI Awareness and Waterfox Classic allowed me to get something as nice and powerful as from the W7 times,.
M$ and the Mozilla foundation hate that, and would like to kill everything that is customizable freely.