Maybe so, if they are thought of like a sticky note ala Windows 10/11 and macOS sticky note apps.
its shortcut key
It’s strange to have that as the last icon
I would not call it strange as there is no strong meaning to the order. However, I can agree to move it to after Recent as it could be perceived as related to (project) Properties or perhaps Recent from a workflow perspective as you pointed out. The problem I have with its current keyboard shortcut Ctrl+Shift+0 is that A) it is not working for me on Windows for some reason, and B) it does rather anchor this as the last panel in list by keeping the current shortcuts convention. It appears that we are heading into the direction of alternating Ctrl and Ctrl+Shift plus number, as panels are added.