That is to say, the aforementioned family resemblance to iOS is far more than a “back to the Mac” redux. But a key point people miss in critiquing Big Sur’s design is how much it offers cognitively. There’s nothing inherently wrong with this, it’s the lifeblood of Twitter. Secondly, UI designers and wannabe armchair UI designers have taken to Twitter to complain about the look of Big Sur. Whether the look is nice is in the eye of the beholder, but they certainly are stark changes especially if you’re visually impaired. This is not a pejorative statement these elements contribute to Big Sur’s look that have ramifications for accessibility. There also are new icons, system alerts, and a Control Center that are virtually copied from iOS and “Mac-ified” for the Mac. The new operating system is full of transparency, which have varying degrees of usability depending on your needs and tolerances. First, and perhaps most obviously, is the visual properties of Big Sur.