Yes, people will complain every time a UI is significantly changed. But there's something else too. Perception is that significant product development resource

Yes, people will complain every time a UI is significantly changed. But there's something else too. Perception is that significant product development resources were devoted to adding rounded corners. But issues often associated with twitter seem to get worse and little product development resources. A few include: harrassment, racism, armies of bots for brigading, and the increasing use of the platform as an instrument by a foreign power to exert influence on the American electorate. Maybe they are trying and not communicating it well. But a UI refresh is clear indication of spent product development, and those issues seem to be getting worse.