I didn't like the post as much as I expected to.
The floppy disk as an icon for save is a legitimate complaint, in the sense that it is early technology that has been deprecated by later technology, and [almost] nobody will ever use one again.
That said, good luck finding a new icon. The difficulty is that the concept of "saving" only came about with computers, and unlike zooming or even grouping things together in folders, finding a real-life pictorial representation of saving is... difficult.
But the others... The last time I checked, bookmarks, calendars, envelopes, magnifying glasses, and screwdrivers all exist in the real world and are used regularly by a lot of people, and they aren't going to go away any time soon.
Also, it's not hard to find microphones today that look a lot like the one in the icon.