Right, that's my point: when Linux gives a big ominous message, it's because it's actually important. If the distro hadn't had that bug, it wouldn't have given the big ominous message.
Remember, the bug wasn't the warning message itself. The bug was removing the DE when installing Steam, which the message correctly warned about. The warning message was appropriate and warranted.
It is Windows, and only Windows, that mis-trains users to ignore warnings because it issues so many spurious ones for benign situations.