Howard Oakley, writing at The Eclectic Light Company

macOS Tahoe’s visual interface:

• Fits largely rectangular contents into windows with excessively rounded corners.
• Enlarges controls without any functional benefit.
• Results in app icons being more uniform, thus less distinguishable and memorable.
• Fails to distinguish tools, controls and other interface elements using differences in tone, so making them harder to use.
• Makes a mess where transparent layers are superimposed, and won’t reduce transparency when that’s needed to render its interface more accessible.

Maybe this is because I’m getting older, but that gives me the benefit of having experienced Apple’s older interfaces, with their exceptional quality and functionality.

It’s just remarkable how much better-looking MacOS was 10 years ago, compared to MacOS 26 Tahoe at its best. And it’s equally remarkable just how bad MacOS 26 Tahoe looks in many typical, non-contrived situations, where entire menus or the title of a window are rendered completely illegible.