Glancing at the new Debian 12 screenshots, I realised that in the past years most major desktop OSes transitioned to a macOS-esque (middle-aligned, bottom) large icon taskbar. Why? Being a fan of the "classic" labeled taskbar, taskbar items with text could provide a lot more info (document or media title, current path etc) and even the elongated click area is larger and more predictable. Also presenting just icons means there has to be a second level grouping if the same app has multiple windows.
Touch displays? Should be irrelevant in desktop mode. High DPI screens that demand dense rectangular items? The tradeoff seems to be big to be just that.
"most major desktop OSes" is an interesting phrase because there aren't that many. macOS obviously pioneered the "dock", and Windows eventually copied it, because that's what Microsoft does. The only other "major" desktop operating systems are the various distributions of Linux. BSD-based operating systems are in no way "major".
If you don't like the dock, you would probably like KDE Plasma.