Vista - One of the terrible technical products in history ???

I was very surprised/upset to see windows vista land up in the list of one of the terrible technical products in history. I have been using Vista for the last 6-8 months and dont have any bad experiences with it and I haven't had any issues with any hardware. But I do accept that there is nothing significant in it to migrate from Windows XP. I am not sure that one reason could make it qualify for one of the terrible tech products in history.