People have been saying this with almost every release since Lion. That's 9 years. I get why people are upset about the "iOSification" of the Mac, but seeing the same complaints over and over gets old after a while.
Time doesn't make problems go away. Especially when the iOSification is in fact getting more extreme.
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Some personal context:
I
hate the visuals of Yosemite-era Mac OS. I hated it the moment I saw Yosemite, and I've continued to hate it ever since. There is no contrast—everything is white (or black, in dark mode) and plain and flat.
I disliked it
so much that this year, I finally got fed up and downgraded all of my primary computers to OS X Mavericks. This involved finding a new set of compatible programs and buying new (old) hardware, because my existing hardware was too new.
So, obviously, I'm not one to automatically go for the new and shiny... and yet, I
really like the design of Big Sur. There's actual contrast again, and color and depth. The icons are easy to scan, clickable elements are obviously clickable, and it all feels vibrant and attractive.
(For the forseeable future, I'm not leaving my new (old) Mavericks machines, because I have other problems with the direction of Mac OS—permission prompts that break all of my scripts, ever-changing app compatibility, etc—but I do feel really good about where the design is headed.)