2.) Why this extreme enlargement of the desktop clock on Windows?
It wasn't actually intended that the clock would be so huge, but there are users who have problems with poor eyesight, as well as users who have huge monitors with 4K resolution or larger, which is why such an extreme increase in size was necessary in the digital desktop clock.
The size of the desktop clock you choose is up to you, of course it has to fit your own visual sensibilities and the overall look of the desktop, whether it's Windows 11 or other older operating systems. Just try the digital desktop clock with different sizes, move them around your desktop and adjust the desktop clock to make the clock size and style suit you.
If you like it magnificently, you can simply switch to the big ones and customize the font of the Digital Desktop Clock Info: This screenshot has been made
A simple example with the digital clock on the Windows 11, 10, desktop with text border and full date display. Info: But it works on all MS OS, no matter
