I also agree: the removal of notification isons of OUR choice, and removal of almost all features in the taskbar is a severe error, even if itcould be preconfigured only BY DEFAULT to show less things.
The new Taskbar does not even allow to launch the Task Manager in the DUMMY menu that appears on a RIGHT CLICK (allowing only very basic and reduced settings for the Taskbar and nothing else) !
As well icons on the task bar (running or pinned) are NO LONGER targets for drag-and-drop.
Windows 11 usability has been reduced too much ! It is a TOY only meant for basic usage on a small tablet. The look and fell seems "fun" for now only because it is new, but rapidly it will be boring.
There were much better proposals to refresh Windows (you'll find many demos in Youtube).
Linux desktop environments are now much more user-friendly and provide many good examples.
User experience in Windows has never been so poor (with limtied choices: no way to select what appears in the Start menu as well, no more groups, only 6 "favorite" apps, no more links to documents by application: it's really difficult now to find things we use the most. The complete list of apps is almost unusable as well (too slow): no more integration of the mouse or even touch event: it's very unpractical. Users that have many apps to work with are lost and are constantly searching the apps or documents they just worked a few minutes before, siomply because it's impossible to organize our work.
We don't really need the new UI theme, this is just superficial when it is now SO MUCH defective and disorganized.