I have not personally experienced any of the items that that he is reporting on either of my home systems, both of which are running Lion. This article smacks of link bait.
Address book, which he doesn't mention, has also been redesigned and had a number of very useful features removed.
Also, did you do a clean install recently, which would indicate that configurations should still be fine, or did you upgrade from a previous OS, which could (but shouldn't) have an unusual/broken configuration?
"Mail crashes all the time." "Fullscreen apps have a habit of just vanishing. They’re running, but they’re not showing." "Finder periodically decides you don’t need to see all your windows any more." "iTunes boot time is measured in aeons." "The “Something has crashed, send a report to Apple” window might as well be your Desktop Picture."
Happen to agree that Launchpad and Mission Control aren't great but that's just my personal opinion.
On both machines I upgraded from the previous OS.