Lock the taskbar option should Lock the taskbar and prevent from accidentally rearranging pinned items or Pinning new items to the taskbar
currently lock the taskbar only prevents from accidentally dragging taskbar and moving it left/right/top. that actually never happened to me, when the taskbar is unlocked, I've never ever accidentally dragged the taskbar and moved it left/right/top.
but instead it's happened lots of times when I accidentally added a new icon to taskbar, rearranged icons, deleted new icons, Unpinned an icon from taskbar.
I need Lock the taskbar to prevent from these accidents too. this is more important and useful and makes more sense.