Despite the internet in unity about the small changes being made to their favorite apps and brands, the designers for these companies have a real reason for changing a brands identity. Each logo has its own detailed document on why the designer has chosen this image. From a designers standpoint the new logos would make sense, as far as them being more symmetrical or easier for visually impaired users to recognize. However, people react negatively to change all the time, even if the reaction is justifiable.
