Honestly, as a current Debian Wheezy user... this isn't true any more. I haven't had to fix anything since I installed it. It's all Just Worked.
If it didn't just work, I'd've bought a Windows license, as I have previously done. This is, in fact, the first Linux install that I've continued using for over a couple of months.
The "it's not very usable" argument was correct in the old GNOME2/KDE3 world, but at least GNOME3 is exceptionally usable and the OS is extremely stable.