This story is a lie.
There’s no “computer icon”. Dragging the System disk to trash ejects it on a classic Mac. If you burrow down into System, you can try deleting system files… which are locked and can’t be deleted.
You can test this yourself on Infinite Mac
If they had “fixed” it, there would be a “My Computer” icon. No such thing exists, go TRY the Infinite Mac I linked above.