Exactly. That’s the core of it. Accessibility isn’t really about one perfect design, it’s about whether the system can adapt to different real human needs instead of assuming one “normal” user.

High contrast helps some people, hurts others. Reduced motion matters. Larger text matters. Keyboard navigation matters. The lesson isn’t “pick the one right setting,” it’s “build the underlying structure so people can override presentation safely.”

If the semantics are good, users and assistive tech have options. If all the usability is trapped in the visual layer, things fall apart fast.

Also totally agree on advertising. A lot of ad tech is basically an anti-accessibility machine. It optimizes for attention capture, even when that makes the actual experience worse for everyone. Advertising frequently triggers me, with all the flashing and strobing and moving parts. That one was me, from the post. And I'm the one that needs the high contrast, too ;- )