I got the shock of my life when I tried to delete the icons showing on my desktop and it not only deleted the icons, but the contents those icons pointed at! Usually, deleting an icon only deletes the abstract graphical "pointer" or link appearing on the desktop, not what it points at. For example, if I delete a Virtualbox-generated icon for a VM, it just removes that icon; it does NOT remove the VM the icon points at for goodness sake!
I've not seen this sort of behavior in a desktop manager before, but then again, I am not truly a "world traveler" in that regard. I've used other popular desktops such as lxde, kde, gnome, fxce, and so on with thunar, dolphin, etc and never had this happen to me. Luckily, I have backups, but this is aggravating and frigtening.
I understand why this happens; the designer decided this was ideal behavior for whatever reason. It is not common, however, and very inconsistent with other desktop environments. It doesn't even matter WHY it happens, what matters is what the user experiences. This needs correction urgently, IMHO. If you disagree, please at least add a stern warning to the user, at least the first time they try to delete an icon, so they can back out before their files are destroyed.