Users don’t like change, and as a product becomes more popular, users will grow ever more resistant to change.
The entire article (about Facebook’s contentious changes to their News Feed) distills to that one sentence. It’s not a Facebook thing1, it’s a people thing.
Really, I grow tired of all this resistance to change. While I’ve been there too—it’s easy to get habituated—it’s annoying to hear. Microsoft Office 20072, Firefox 3, Safari 4, BlackBerry, iPhone, etc. etc.
It would seem that if people had their way, interfaces would become static (at some unspecified point) and remain there. Rather than fixing quirks, users would simply habituate to them. And there would be little room for innovation.
I understand that designers/engineers don’t always get things right, but especially with computers, there is a lot of change from year to year, and that’s a good thing. An inclination to embrace change would go a long way to enjoying the dynamic world of technology.